129040264 has 16 divisors (see below), whose sum is σ = 244446300. Its totient is φ = 63854592.

The previous prime is 129040253. The next prime is 129040277. The reversal of 129040264 is 462040921.

It can be written as a sum of positive squares in 2 ways, for example, as 129004164 + 36100 = 11358^2 + 190^2 .

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, 82369 + ... + 83920.

Almost surely, 2^129040264 is an apocalyptic number.

It is an amenable number.

129040264 is a deficient number, since it is larger than the sum of its proper divisors (115406036).

129040264 is a wasteful number, since it uses less digits than its factorization.

129040264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166392 (or 166388 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 129040264 is about 11359.5890770749. The cubic root of 129040264 is about 505.3299989956.

The spelling of 129040264 in words is "one hundred twenty-nine million, forty thousand, two hundred sixty-four".