129349732 has 24 divisors (see below), whose sum is σ = 235872000. Its totient is φ = 61997280.

The previous prime is 129349729. The next prime is 129349741. The reversal of 129349732 is 237943921.

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, 8394 + ... + 18142.

It is an arithmetic number, because the mean of its divisors is an integer number (9828000).

Almost surely, 2^129349732 is an apocalyptic number.

It is an amenable number.

129349732 is a deficient number, since it is larger than the sum of its proper divisors (106522268).

129349732 is a wasteful number, since it uses less digits than its factorization.

129349732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9891 (or 9889 counting only the distinct ones).

The product of its digits is 81648, while the sum is 40.

The square root of 129349732 is about 11373.2023634507. The cubic root of 129349732 is about 505.7336420425.

The spelling of 129349732 in words is "one hundred twenty-nine million, three hundred forty-nine thousand, seven hundred thirty-two".