129242996 has 24 divisors (see below), whose sum is σ = 229992000. Its totient is φ = 63536832.

The previous prime is 129242989. The next prime is 129243007. The reversal of 129242996 is 699242921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145265 + ... + 146151.

It is an arithmetic number, because the mean of its divisors is an integer number (9583000).

Almost surely, 2^129242996 is an apocalyptic number.

It is an amenable number.

129242996 is a deficient number, since it is larger than the sum of its proper divisors (100749004).

129242996 is a wasteful number, since it uses less digits than its factorization.

129242996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463 (or 1461 counting only the distinct ones).

The product of its digits is 139968, while the sum is 44.

The square root of 129242996 is about 11368.5089611611. The cubic root of 129242996 is about 505.5944977253.

The spelling of 129242996 in words is "one hundred twenty-nine million, two hundred forty-two thousand, nine hundred ninety-six".