129137804 has 6 divisors (see below), whose sum is σ = 225991164. Its totient is φ = 64568900.

The previous prime is 129137779. The next prime is 129137809. The reversal of 129137804 is 408731921.

It is not an unprimeable number, because it can be changed into a prime (129137809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16142222 + ... + 16142229.

It is an arithmetic number, because the mean of its divisors is an integer number (37665194).

Almost surely, 2^129137804 is an apocalyptic number.

It is an amenable number.

129137804 is a deficient number, since it is larger than the sum of its proper divisors (96853360).

129137804 is a wasteful number, since it uses less digits than its factorization.

129137804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32284455 (or 32284453 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 129137804 is about 11363.8815551730. The cubic root of 129137804 is about 505.4572912391.

The spelling of 129137804 in words is "one hundred twenty-nine million, one hundred thirty-seven thousand, eight hundred four".