129299572 has 12 divisors (see below), whose sum is σ = 228277476. Its totient is φ = 64077440.

The previous prime is 129299563. The next prime is 129299593. The reversal of 129299572 is 275992921.

It can be written as a sum of positive squares in 2 ways, for example, as 25341156 + 103958416 = 5034^2 + 10196^2 .

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, 142579 + ... + 143482.

It is an arithmetic number, because the mean of its divisors is an integer number (19023123).

Almost surely, 2^129299572 is an apocalyptic number.

It is an amenable number.

129299572 is a deficient number, since it is larger than the sum of its proper divisors (98977904).

129299572 is a wasteful number, since it uses less digits than its factorization.

129299572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286178 (or 286176 counting only the distinct ones).

The product of its digits is 204120, while the sum is 46.

The square root of 129299572 is about 11370.9969659656. The cubic root of 129299572 is about 505.6682614683.

The spelling of 129299572 in words is "one hundred twenty-nine million, two hundred ninety-nine thousand, five hundred seventy-two".