129572 has 12 divisors (see below), whose sum is σ = 234780. Its totient is φ = 62496.

The previous prime is 129553. The next prime is 129581. The reversal of 129572 is 275921.

It can be written as a sum of positive squares in 2 ways, for example, as 30976 + 98596 = 176^2 + 314^2 .

It is an Ulam number.

It is an unprimeable number.

129572 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443 + ... + 674.

It is an arithmetic number, because the mean of its divisors is an integer number (19565).

2¹²⁹⁵⁷² is an apocalyptic number.

It is an amenable number.

129572 is a deficient number, since it is larger than the sum of its proper divisors (105208).

129572 is a wasteful number, since it uses less digits than its factorization.

129572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150 (or 1148 counting only the distinct ones).

The product of its digits is 1260, while the sum is 26.

The square root of 129572 is about 359.9611090104. The cubic root of 129572 is about 50.6023151935.

The spelling of 129572 in words is "one hundred twenty-nine thousand, five hundred seventy-two".