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130 (number)

Field	Value
number	130
divisor	1, 2, 5, 10, 13, 26, 65, 130

130 (one hundred [and] thirty) is the natural number following 129 and preceding 131.

In mathematics

130 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.

130 is the largest number that cannot be written as the sum of four hexagonal numbers.

130 equals both 27 + 2 and 53 + 5 and is therefore a doubly strictly adsurd number.{{cite journal

In other fields

A 130-30 fund or a ratio up to 150/50 is a type of collective investment vehicle

References

[http://mathworld.wolfram.com/HexagonalNumber.html MathWorld - Hexagonal Number]

Info: Wikipedia Source

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integers

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