204047 has 2 divisors, whose sum is σ = 204048. Its totient is φ = 204046.

The previous prime is 204023. The next prime is 204059. The reversal of 204047 is 740402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204047 - 2¹⁰ = 203023 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102023 + 102024.

It is an arithmetic number, because the mean of its divisors is an integer number (102024).

2²⁰⁴⁰⁴⁷ is an apocalyptic number.

204047 is a deficient number, since it is larger than the sum of its proper divisors (1).

204047 is an equidigital number, since it uses as much as digits as its factorization.

204047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 204047 is about 451.7156185035. The cubic root of 204047 is about 58.8721737035.

Adding to 204047 its reverse (740402), we get a palindrome (944449).

The spelling of 204047 in words is "two hundred four thousand, forty-seven", and thus it is an iban number.