129257104300 has 72 divisors (see below), whose sum is σ = 299821872672. Its totient is φ = 48248640000.

The previous prime is 129257104289. The next prime is 129257104337. The reversal of 129257104300 is 3401752921.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 591051 + ... + 779650.

It is an arithmetic number, because the mean of its divisors is an integer number (4164192676).

Almost surely, 2^129257104300 is an apocalyptic number.

129257104300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129257104300 is an abundant number, since it is smaller than the sum of its proper divisors (170564768372).

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

129257104300 is a wasteful number, since it uses less digits than its factorization.

129257104300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370779 (or 1370772 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 129257104300 in words is "one hundred twenty-nine billion, two hundred fifty-seven million, one hundred four thousand, three hundred".