204122985 has 32 divisors (see below), whose sum is σ = 375045120. Its totient is φ = 93758400.

The previous prime is 204122977. The next prime is 204123001. The reversal of 204122985 is 589221402.

204122985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204122985 - 2³ = 204122977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29421 + ... + 35690.

It is an arithmetic number, because the mean of its divisors is an integer number (11720160).

Almost surely, 2^204122985 is an apocalyptic number.

It is an amenable number.

204122985 is a deficient number, since it is larger than the sum of its proper divisors (170922135).

204122985 is a wasteful number, since it uses less digits than its factorization.

204122985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65149.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 204122985 is about 14287.1615445476. The cubic root of 204122985 is about 588.7948059355.

The spelling of 204122985 in words is "two hundred four million, one hundred twenty-two thousand, nine hundred eighty-five".