204080117 has 2 divisors, whose sum is σ = 204080118. Its totient is φ = 204080116.

The previous prime is 204080113. The next prime is 204080141. The reversal of 204080117 is 711080402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186431716 + 17648401 = 13654^2 + 4201^2 .

It is a cyclic number.

It is not a de Polignac number, because 204080117 - 2² = 204080113 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 204080092 and 204080101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204080111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102040058 + 102040059.

It is an arithmetic number, because the mean of its divisors is an integer number (102040059).

Almost surely, 2^204080117 is an apocalyptic number.

It is an amenable number.

204080117 is a deficient number, since it is larger than the sum of its proper divisors (1).

204080117 is an equidigital number, since it uses as much as digits as its factorization.

204080117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 204080117 is about 14285.6612377586. The cubic root of 204080117 is about 588.7535853238.

The spelling of 204080117 in words is "two hundred four million, eighty thousand, one hundred seventeen".