129411904 has 28 divisors (see below), whose sum is σ = 258156964. Its totient is φ = 64364544.

The previous prime is 129411853. The next prime is 129411917. The reversal of 129411904 is 409114921.

It can be written as a sum of positive squares in 2 ways, for example, as 64770304 + 64641600 = 8048^2 + 8040^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7114 + ... + 17590.

Almost surely, 2^129411904 is an apocalyptic number.

It is an amenable number.

129411904 is a deficient number, since it is larger than the sum of its proper divisors (128745060).

129411904 is a wasteful number, since it uses less digits than its factorization.

129411904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10682 (or 10672 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 129411904 is about 11375.9353022070. The cubic root of 129411904 is about 505.8146560893.

The spelling of 129411904 in words is "one hundred twenty-nine million, four hundred eleven thousand, nine hundred four".