204130257 has 16 divisors (see below), whose sum is σ = 282992640. Its totient is φ = 130741200.

The previous prime is 204130249. The next prime is 204130261. The reversal of 204130257 is 752031402.

204130257 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 204130257 - 2³ = 204130249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204130247) 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, 5032 + ... + 20822.

It is an arithmetic number, because the mean of its divisors is an integer number (17687040).

Almost surely, 2^204130257 is an apocalyptic number.

It is an amenable number.

204130257 is a deficient number, since it is larger than the sum of its proper divisors (78862383).

204130257 is a wasteful number, since it uses less digits than its factorization.

204130257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15964.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 204130257 is about 14287.4160364987. The cubic root of 204130257 is about 588.8017979048.

Adding to 204130257 its reverse (752031402), we get a palindrome (956161659).

The spelling of 204130257 in words is "two hundred four million, one hundred thirty thousand, two hundred fifty-seven".