204123953 has 16 divisors (see below), whose sum is σ = 235992960. Its totient is φ = 174787200.

The previous prime is 204123943. The next prime is 204123977. The reversal of 204123953 is 359321402.

204123953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 204123953 - 2¹² = 204119857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204123923) 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, 5276 + ... + 20882.

It is an arithmetic number, because the mean of its divisors is an integer number (14749560).

Almost surely, 2^204123953 is an apocalyptic number.

It is an amenable number.

204123953 is a deficient number, since it is larger than the sum of its proper divisors (31869007).

204123953 is a wasteful number, since it uses less digits than its factorization.

204123953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15688.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 204123953 is about 14287.1954210755. The cubic root of 204123953 is about 588.7957366692.

The spelling of 204123953 in words is "two hundred four million, one hundred twenty-three thousand, nine hundred fifty-three".