129115080 has 64 divisors (see below), whose sum is σ = 430387200. Its totient is φ = 34430400.

The previous prime is 129115057. The next prime is 129115121. The reversal of 129115080 is 80511921.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58696 + ... + 60855.

It is an arithmetic number, because the mean of its divisors is an integer number (6724800).

Almost surely, 2^129115080 is an apocalyptic number.

129115080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129115080 is an abundant number, since it is smaller than the sum of its proper divisors (301272120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129115080 is a wasteful number, since it uses less digits than its factorization.

129115080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119571 (or 119561 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 129115080 is about 11362.8816767579. The cubic root of 129115080 is about 505.4276415550.

The spelling of 129115080 in words is "one hundred twenty-nine million, one hundred fifteen thousand, eighty".