129988502 has 32 divisors (see below), whose sum is σ = 233280000. Its totient is φ = 53114688.

The previous prime is 129988493. The next prime is 129988513. The reversal of 129988502 is 205889921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160274 + ... + 161082.

It is an arithmetic number, because the mean of its divisors is an integer number (7290000).

Almost surely, 2^129988502 is an apocalyptic number.

129988502 is a deficient number, since it is larger than the sum of its proper divisors (103291498).

129988502 is a wasteful number, since it uses less digits than its factorization.

129988502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 129988502 is about 11401.2500191865. The cubic root of 129988502 is about 506.5647664610.

The spelling of 129988502 in words is "one hundred twenty-nine million, nine hundred eighty-eight thousand, five hundred two".