# 140 number

**140** is the natural number following 139 and preceding 141.

Template:Numbers 100-200 | |

Cardinal | One hundred [and] forty |

Ordinal | 140th |

Factorization | |

Divisors | 2, 5, 7, 10, 20, 28, 35, 70 |

Roman numeral | CXL |

Binary | 10001100 |

Octal | 214 |

Hexadecimal | 8c |

140 is an abundant number and a harmonic divisor number. It is the sum of the squares of the first seven integers, which makes it a square pyramidal number, and in base 10 it is divisible by the sum of its digits, which makes it a Harshad number.

**One hundred [and] forty** is also:

- The designation of some spur routes of Interstate 40.
- The age Job died at (Holy Bible, Job 42:16).
- The year AD
**140**or 140 BC.

## Other numbers in the 140s

**One hundred [and] forty-one** has its own article.

**One hundred [and] forty-two** has its own article.

**One hundred [and] forty-three** (143, CXLIII) is the natural number following one hundred forty-two and preceding one hundred forty-four. It is a composite number, and its factorization is

This number is the sum of three consecutive primes (43 + 47 + 53), as well as the sum of seven consecutive primes (11 + 13 + 17 + 19 + 23 + 29 + 31). But this number is never the sum of an integer and its base 10 digits, making it a self number.

Every positive integer is the sum of at most 143 seventh powers (see Waring's problem).

**One hundred [and] forty-three** is also:

**One hundred [and] forty-four** has its own article.

**One hundred [and] forty-five** has its own article.

**One hundred [and] forty-six** (146, CXLVI) is the natural number following one hundred forty-five and preceding one hundred [and] forty-six. It is a triangular number and an octahedral number as well as a composite number, and its factorization is

It is a nontotient since there is no integer with 146 coprimes below it, and an untouchable number since there is no integer whose proper divisors add up to 146.

**One hundred forty-six** is also:

One hundred and forty-seven has its own article.

**One hundred [and] forty-eight** (148, CXLVIII) is the natural number following one hundred forty-seven and preceding one hundred forty-eight. It is a heptagonal number and a centered heptagonal number. It is a composite number, and its factorization

**One hundred [and] forty-eight** is also:

- The number of singers, sons of Asaph, at the Census of men of Israel upon return from exile (Holy Bible, Nehemiah 7:44).
- The year AD
**148**or 148 BC.

One hundred and forty-nine has its own article.