204034121 has 2 divisors, whose sum is σ = 204034122. Its totient is φ = 204034120.

The previous prime is 204034093. The next prime is 204034133. The reversal of 204034121 is 121430402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126787600 + 77246521 = 11260^2 + 8789^2 .

It is a cyclic number.

It is not a de Polignac number, because 204034121 - 2⁶ = 204034057 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204034121.

It is not a weakly prime, because it can be changed into another prime (204064121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102017060 + 102017061.

It is an arithmetic number, because the mean of its divisors is an integer number (102017061).

Almost surely, 2^204034121 is an apocalyptic number.

It is an amenable number.

204034121 is a deficient number, since it is larger than the sum of its proper divisors (1).

204034121 is an equidigital number, since it uses as much as digits as its factorization.

204034121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 204034121 is about 14284.0512810617. The cubic root of 204034121 is about 588.7093504991.

Adding to 204034121 its reverse (121430402), we get a palindrome (325464523).

The spelling of 204034121 in words is "two hundred four million, thirty-four thousand, one hundred twenty-one".