129472566 has 16 divisors (see below), whose sum is σ = 270203904. Its totient is φ = 41281064.

The previous prime is 129472477. The next prime is 129472571. The reversal of 129472566 is 665274921.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468966 + ... + 469241.

It is an arithmetic number, because the mean of its divisors is an integer number (16887744).

Almost surely, 2^129472566 is an apocalyptic number.

129472566 is an abundant number, since it is smaller than the sum of its proper divisors (140731338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129472566 is a wasteful number, since it uses less digits than its factorization.

129472566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938235.

The product of its digits is 181440, while the sum is 42.

The square root of 129472566 is about 11378.6012321375. The cubic root of 129472566 is about 505.8936775050.

The spelling of 129472566 in words is "one hundred twenty-nine million, four hundred seventy-two thousand, five hundred sixty-six".