129012664 has 16 divisors (see below), whose sum is σ = 263889720. Its totient is φ = 58642080.

The previous prime is 129012659. The next prime is 129012671. The reversal of 129012664 is 466210921.

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, 732939 + ... + 733114.

Almost surely, 2^129012664 is an apocalyptic number.

It is an amenable number.

129012664 is an abundant number, since it is smaller than the sum of its proper divisors (134877056).

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

129012664 is a wasteful number, since it uses less digits than its factorization.

129012664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466070 (or 1466066 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 129012664 is about 11358.3741794325. The cubic root of 129012664 is about 505.2939686331.

The spelling of 129012664 in words is "one hundred twenty-nine million, twelve thousand, six hundred sixty-four".