129572233 has 8 divisors (see below), whose sum is σ = 148224960. Its totient is φ = 110955120.

The previous prime is 129572221. The next prime is 129572237. The reversal of 129572233 is 332275921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129572233 - 2⁹ = 129571721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129572237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583 + ... + 16108.

It is an arithmetic number, because the mean of its divisors is an integer number (18528120).

Almost surely, 2^129572233 is an apocalyptic number.

It is an amenable number.

129572233 is a deficient number, since it is larger than the sum of its proper divisors (18652727).

129572233 is a wasteful number, since it uses less digits than its factorization.

129572233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17807.

The product of its digits is 22680, while the sum is 34.

The square root of 129572233 is about 11382.9799701133. The cubic root of 129572233 is about 506.0234552496.

The spelling of 129572233 in words is "one hundred twenty-nine million, five hundred seventy-two thousand, two hundred thirty-three".