129765902 has 32 divisors (see below), whose sum is σ = 228904704. Its totient is φ = 54014400.

The previous prime is 129765901. The next prime is 129765929. The reversal of 129765902 is 209567921.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a self number, because there is not a number n which added to its sum of digits gives 129765902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129765901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189653 + ... + 190335.

It is an arithmetic number, because the mean of its divisors is an integer number (7153272).

Almost surely, 2^129765902 is an apocalyptic number.

129765902 is a deficient number, since it is larger than the sum of its proper divisors (99138802).

129765902 is a wasteful number, since it uses less digits than its factorization.

129765902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 129765902 is about 11391.4837488362. The cubic root of 129765902 is about 506.2754440903.

The spelling of 129765902 in words is "one hundred twenty-nine million, seven hundred sixty-five thousand, nine hundred two".