129250012 has 6 divisors (see below), whose sum is σ = 226187528. Its totient is φ = 64625004.

The previous prime is 129249979. The next prime is 129250021. The reversal of 129250012 is 210052921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16156248 + ... + 16156255.

Almost surely, 2^129250012 is an apocalyptic number.

It is an amenable number.

129250012 is a deficient number, since it is larger than the sum of its proper divisors (96937516).

129250012 is a wasteful number, since it uses less digits than its factorization.

129250012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32312507 (or 32312505 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 129250012 is about 11368.8175286615. The cubic root of 129250012 is about 505.6036463495.

The spelling of 129250012 in words is "one hundred twenty-nine million, two hundred fifty thousand, twelve".