129902044 has 6 divisors (see below), whose sum is σ = 227328584. Its totient is φ = 64951020.

The previous prime is 129902041. The next prime is 129902051. The reversal of 129902044 is 440209921.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 129901997 and 129902015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129902041) 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 as a sum of consecutive naturals, namely, 16237752 + ... + 16237759.

Almost surely, 2^129902044 is an apocalyptic number.

It is an amenable number.

129902044 is a deficient number, since it is larger than the sum of its proper divisors (97426540).

129902044 is a wasteful number, since it uses less digits than its factorization.

129902044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32475515 (or 32475513 counting only the distinct ones).

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

The square root of 129902044 is about 11397.4577867172. The cubic root of 129902044 is about 506.4524327046.

The spelling of 129902044 in words is "one hundred twenty-nine million, nine hundred two thousand, forty-four".