204064121 has 2 divisors, whose sum is σ = 204064122. Its totient is φ = 204064120.

The previous prime is 204064057. The next prime is 204064163. The reversal of 204064121 is 121460402.

204064121 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., 164121721 + 39942400 = 12811^2 + 6320^2 .

It is a cyclic number.

It is not a de Polignac number, because 204064121 - 2⁶ = 204064057 is a prime.

It is a super-3 number, since 3×204064121³ (a number of 26 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 204064093 and 204064102.

It is not a weakly prime, because it can be changed into another prime (204064181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102032060 + 102032061.

It is an arithmetic number, because the mean of its divisors is an integer number (102032061).

Almost surely, 2^204064121 is an apocalyptic number.

It is an amenable number.

204064121 is a deficient number, since it is larger than the sum of its proper divisors (1).

204064121 is an equidigital number, since it uses as much as digits as its factorization.

204064121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 204064121 is about 14285.1013647086. The cubic root of 204064121 is about 588.7382025605.

The spelling of 204064121 in words is "two hundred four million, sixty-four thousand, one hundred twenty-one".