129139004 has 24 divisors (see below), whose sum is σ = 241669008. Its totient is φ = 60166400.

The previous prime is 129138983. The next prime is 129139037. The reversal of 129139004 is 400931921.

It is a happy number.

It is a super-2 number, since 2×129139004² = 33353764708224032, which contains 22 as substring.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 2534 + ... + 16269.

It is an arithmetic number, because the mean of its divisors is an integer number (10069542).

Almost surely, 2^129139004 is an apocalyptic number.

It is an amenable number.

129139004 is a deficient number, since it is larger than the sum of its proper divisors (112530004).

129139004 is a wasteful number, since it uses less digits than its factorization.

129139004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18925 (or 18923 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 129139004 is about 11363.9343539111. The cubic root of 129139004 is about 505.4588568712.

The spelling of 129139004 in words is "one hundred twenty-nine million, one hundred thirty-nine thousand, four".