172412929 has 16 divisors (see below), whose sum is σ = 201180672. Its totient is φ = 146297088.

The previous prime is 172412893. The next prime is 172412987. The reversal of 172412929 is 929214271.

It is a cyclic number.

It is not a de Polignac number, because 172412929 - 2¹¹ = 172410881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172412029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432 + ... + 18574.

It is an arithmetic number, because the mean of its divisors is an integer number (12573792).

Almost surely, 2^172412929 is an apocalyptic number.

It is an amenable number.

172412929 is a deficient number, since it is larger than the sum of its proper divisors (28767743).

172412929 is a wasteful number, since it uses less digits than its factorization.

172412929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18216.

The product of its digits is 18144, while the sum is 37.

The square root of 172412929 is about 13130.6103818520. The cubic root of 172412929 is about 556.5744638346.

The spelling of 172412929 in words is "one hundred seventy-two million, four hundred twelve thousand, nine hundred twenty-nine".