129336992 has 12 divisors (see below), whose sum is σ = 254632266. Its totient is φ = 64668480.

The previous prime is 129336953. The next prime is 129337007. The reversal of 129336992 is 299633921.

It can be written as a sum of positive squares in only one way, i.e., 67305616 + 62031376 = 8204^2 + 7876^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2020859 + ... + 2020922.

Almost surely, 2^129336992 is an apocalyptic number.

It is an amenable number.

129336992 is a deficient number, since it is larger than the sum of its proper divisors (125295274).

129336992 is an equidigital number, since it uses as much as digits as its factorization.

129336992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041791 (or 4041783 counting only the distinct ones).

The product of its digits is 157464, while the sum is 44.

The square root of 129336992 is about 11372.6422611458. The cubic root of 129336992 is about 505.7170378124.

The spelling of 129336992 in words is "one hundred twenty-nine million, three hundred thirty-six thousand, nine hundred ninety-two".