204572423 has 4 divisors (see below), whose sum is σ = 223169928. Its totient is φ = 185974920.

The previous prime is 204572387. The next prime is 204572429. The reversal of 204572423 is 324275402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204572423 - 2⁶ = 204572359 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204572429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9298736 + ... + 9298757.

It is an arithmetic number, because the mean of its divisors is an integer number (55792482).

Almost surely, 2^204572423 is an apocalyptic number.

204572423 is a deficient number, since it is larger than the sum of its proper divisors (18597505).

204572423 is a wasteful number, since it uses less digits than its factorization.

204572423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18597504.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 204572423 is about 14302.8816327340. The cubic root of 204572423 is about 589.2266253095.

The spelling of 204572423 in words is "two hundred four million, five hundred seventy-two thousand, four hundred twenty-three".