129194732 has 12 divisors (see below), whose sum is σ = 233384256. Its totient is φ = 62513520.

The previous prime is 129194711. The next prime is 129194759. The reversal of 129194732 is 237491921.

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, 520823 + ... + 521070.

It is an arithmetic number, because the mean of its divisors is an integer number (19448688).

Almost surely, 2^129194732 is an apocalyptic number.

It is an amenable number.

129194732 is a deficient number, since it is larger than the sum of its proper divisors (104189524).

129194732 is a wasteful number, since it uses less digits than its factorization.

129194732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041928 (or 1041926 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 129194732 is about 11366.3860571423. The cubic root of 129194732 is about 505.5315541442.

The spelling of 129194732 in words is "one hundred twenty-nine million, one hundred ninety-four thousand, seven hundred thirty-two".