204054123 has 16 divisors (see below), whose sum is σ = 334858496. Its totient is φ = 107632800.

The previous prime is 204054107. The next prime is 204054131. The reversal of 204054123 is 321450402.

It is not a de Polignac number, because 204054123 - 2⁴ = 204054107 is a prime.

It is a super-2 number, since 2×204054123² = 83276170226598258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 204054123.

It is not an unprimeable number, because it can be changed into a prime (204054133) 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, 373453 + ... + 373998.

It is an arithmetic number, because the mean of its divisors is an integer number (20928656).

Almost surely, 2^204054123 is an apocalyptic number.

204054123 is a deficient number, since it is larger than the sum of its proper divisors (130804373).

204054123 is a wasteful number, since it uses less digits than its factorization.

204054123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747474.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 204054123 is about 14284.7514154080. The cubic root of 204054123 is about 588.7285874443.

The spelling of 204054123 in words is "two hundred four million, fifty-four thousand, one hundred twenty-three".