129740232 has 16 divisors (see below), whose sum is σ = 324350640. Its totient is φ = 43246736.

The previous prime is 129740201. The next prime is 129740249. The reversal of 129740232 is 232047921.

It is a self number, because there is not a number n which added to its sum of digits gives 129740232.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2702898 + ... + 2702945.

It is an arithmetic number, because the mean of its divisors is an integer number (20271915).

Almost surely, 2^129740232 is an apocalyptic number.

129740232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129740232 is an abundant number, since it is smaller than the sum of its proper divisors (194610408).

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

129740232 is a wasteful number, since it uses less digits than its factorization.

129740232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5405852 (or 5405848 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 129740232 is about 11390.3569742129. The cubic root of 129740232 is about 506.2420584641.

The spelling of 129740232 in words is "one hundred twenty-nine million, seven hundred forty thousand, two hundred thirty-two".