204172 has 6 divisors (see below), whose sum is σ = 357308. Its totient is φ = 102084.

The previous prime is 204163. The next prime is 204173. The reversal of 204172 is 271402.

204172 is nontrivially palindromic in base 6 and base 13.

204172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (204173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25518 + ... + 25525.

2²⁰⁴¹⁷² is an apocalyptic number.

It is an amenable number.

204172 is a deficient number, since it is larger than the sum of its proper divisors (153136).

204172 is a wasteful number, since it uses less digits than its factorization.

204172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51047 (or 51045 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 204172 is about 451.8539587079. The cubic root of 204172 is about 58.8841930251.

Adding to 204172 its reverse (271402), we get a palindrome (475574).

The spelling of 204172 in words is "two hundred four thousand, one hundred seventy-two", and thus it is an iban number.