140 (number)

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140 is the natural number following 139 and preceding 141.

<< 140 141 142 143 144 145 146 147 148 149 >> List of numbers — Integers ← 100 110 120 130 140 150 160 170 180 190 →
Cardinal	One hundred [and] forty
Ordinal	140th
Factorization
Divisors	2, 4, 5, 7, 10, 14, 20, 28, 35, 70
Roman numeral	CXL
Binary	10001100
Octal	214
Hexadecimal	8c

[edit] In mathematics

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.

The sum of Euler's totient function φ(x) over the first twenty-one integers is 140.

[edit] In other fields

One hundred [and] forty is also:

• The age Job died at (Bible, Job 42:16).
• The year AD 140 or 140 BC.