204102045 has 32 divisors (see below), whose sum is σ = 414685440. Its totient is φ = 93303360.

The previous prime is 204102001. The next prime is 204102053. The reversal of 204102045 is 540201402.

204102045 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 204102045 - 2⁶ = 204101981 is a prime.

It is a congruent number.

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, 107046 + ... + 108935.

It is an arithmetic number, because the mean of its divisors is an integer number (12958920).

Almost surely, 2^204102045 is an apocalyptic number.

It is an amenable number.

204102045 is an abundant number, since it is smaller than the sum of its proper divisors (210583395).

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

204102045 is a wasteful number, since it uses less digits than its factorization.

204102045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216002 (or 215996 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 204102045 is about 14286.4286999936. The cubic root of 204102045 is about 588.7746713666.

Adding to 204102045 its reverse (540201402), we get a palindrome (744303447).

The spelling of 204102045 in words is "two hundred four million, one hundred two thousand, forty-five".