204042617 has 2 divisors, whose sum is σ = 204042618. Its totient is φ = 204042616.

The previous prime is 204042613. The next prime is 204042649. The reversal of 204042617 is 716240402.

204042617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161061481 + 42981136 = 12691^2 + 6556^2 .

It is a cyclic number.

It is not a de Polignac number, because 204042617 - 2² = 204042613 is a prime.

It is not a weakly prime, because it can be changed into another prime (204042613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102021308 + 102021309.

It is an arithmetic number, because the mean of its divisors is an integer number (102021309).

Almost surely, 2^204042617 is an apocalyptic number.

It is an amenable number.

204042617 is a deficient number, since it is larger than the sum of its proper divisors (1).

204042617 is an equidigital number, since it uses as much as digits as its factorization.

204042617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 204042617 is about 14284.3486725857. The cubic root of 204042617 is about 588.7175216899.

The spelling of 204042617 in words is "two hundred four million, forty-two thousand, six hundred seventeen".