129837136 has 40 divisors (see below), whose sum is σ = 295543584. Its totient is φ = 54476160.

The previous prime is 129837131. The next prime is 129837137. The reversal of 129837136 is 631738921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129837131) 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 7 ways as a sum of consecutive naturals, for example, 26086 + ... + 30661.

Almost surely, 2^129837136 is an apocalyptic number.

129837136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129837136 is an abundant number, since it is smaller than the sum of its proper divisors (165706448).

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

129837136 is a wasteful number, since it uses less digits than its factorization.

129837136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56779 (or 56773 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 129837136 is about 11394.6099538334. The cubic root of 129837136 is about 506.3680658227.

The spelling of 129837136 in words is "one hundred twenty-nine million, eight hundred thirty-seven thousand, one hundred thirty-six".