129375968 has 24 divisors (see below), whose sum is σ = 259518168. Its totient is φ = 63466624.

The previous prime is 129375919. The next prime is 129375973. The reversal of 129375968 is 869573921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36446 + ... + 39837.

It is an arithmetic number, because the mean of its divisors is an integer number (10813257).

Almost surely, 2^129375968 is an apocalyptic number.

It is an amenable number.

129375968 is an abundant number, since it is smaller than the sum of its proper divisors (130142200).

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

129375968 is an equidigital number, since it uses as much as digits as its factorization.

129375968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76346 (or 76338 counting only the distinct ones).

The product of its digits is 816480, while the sum is 50.

The square root of 129375968 is about 11374.3557180176. The cubic root of 129375968 is about 505.7678323746.

The spelling of 129375968 in words is "one hundred twenty-nine million, three hundred seventy-five thousand, nine hundred sixty-eight".