130 (number)

From Wikipedia, the free encyclopedia

130 is the natural number following 129 and preceding 131.

Cardinal One hundred [and]
thirty
Ordinal 130th
Factorization 2 \cdot 5 \cdot 13
Divisors 1, 2, 5, 10, 13, 26, 65, 130
Roman numeral CXXX
Binary 10000010
Hexadecimal 82

Contents

[edit] In mathematics

One hundred [and] thirty is a sphenic number. It is a noncototient since there is no answer to the equation x - φ(x) = 130.

130 is the only integer that is the sum of the squares of its first four divisors, including 1: 12 + 22 + 52 + 102 = 130.

[edit] In the military

[edit] In transportation

[edit] In other fields

One hundred [and] thirty is also:

[edit] See also