129310392 has 32 divisors (see below), whose sum is σ = 331163280. Its totient is φ = 42051840.

The previous prime is 129310387. The next prime is 129310411. The reversal of 129310392 is 293013921.

It is a happy number.

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, 64723 + ... + 66690.

Almost surely, 2^129310392 is an apocalyptic number.

129310392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129310392 is an abundant number, since it is smaller than the sum of its proper divisors (201852888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129310392 is a wasteful number, since it uses less digits than its factorization.

129310392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131463 (or 131459 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 129310392 is about 11371.4727278396. The cubic root of 129310392 is about 505.6823661244.

The spelling of 129310392 in words is "one hundred twenty-nine million, three hundred ten thousand, three hundred ninety-two".