129555704 has 16 divisors (see below), whose sum is σ = 246900120. Its totient is φ = 63715680.

The previous prime is 129555697. The next prime is 129555709. The reversal of 129555704 is 407555921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129555709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132254 + ... + 133229.

Almost surely, 2^129555704 is an apocalyptic number.

It is an amenable number.

129555704 is a deficient number, since it is larger than the sum of its proper divisors (117344416).

129555704 is a wasteful number, since it uses less digits than its factorization.

129555704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265550 (or 265546 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 129555704 is about 11382.2539068499. The cubic root of 129555704 is about 506.0019372202.

The spelling of 129555704 in words is "one hundred twenty-nine million, five hundred fifty-five thousand, seven hundred four".