204121204 has 12 divisors (see below), whose sum is σ = 408242464. Its totient is φ = 87480504.

The previous prime is 204121201. The next prime is 204121207. The reversal of 204121204 is 402121402.

It is an interprime number because it is at equal distance from previous prime (204121201) and next prime (204121207).

204121204 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204121201) 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, 3644994 + ... + 3645049.

Almost surely, 2^204121204 is an apocalyptic number.

It is an amenable number.

204121204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204121204 is a wasteful number, since it uses less digits than its factorization.

204121204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7290054 (or 7290052 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 204121204 is about 14287.0992157261. The cubic root of 204121204 is about 588.7930934930.

Adding to 204121204 its reverse (402121402), we get a palindrome (606242606).

The spelling of 204121204 in words is "two hundred four million, one hundred twenty-one thousand, two hundred four".