204123797 has 2 divisors, whose sum is σ = 204123798. Its totient is φ = 204123796.

The previous prime is 204123769. The next prime is 204123817. The reversal of 204123797 is 797321402.

204123797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190053796 + 14070001 = 13786^2 + 3751^2 .

It is a cyclic number.

It is not a de Polignac number, because 204123797 - 2⁸ = 204123541 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 (204123757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102061898 + 102061899.

It is an arithmetic number, because the mean of its divisors is an integer number (102061899).

Almost surely, 2^204123797 is an apocalyptic number.

It is an amenable number.

204123797 is a deficient number, since it is larger than the sum of its proper divisors (1).

204123797 is an equidigital number, since it uses as much as digits as its factorization.

204123797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 204123797 is about 14287.1899616405. The cubic root of 204123797 is about 588.7955866751.

The spelling of 204123797 in words is "two hundred four million, one hundred twenty-three thousand, seven hundred ninety-seven".