204242141 has 2 divisors, whose sum is σ = 204242142. Its totient is φ = 204242140.

The previous prime is 204242117. The next prime is 204242173. The reversal of 204242141 is 141242402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183494116 + 20748025 = 13546^2 + 4555^2 .

It is a cyclic number.

It is not a de Polignac number, because 204242141 - 2¹⁰ = 204241117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204242111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102121070 + 102121071.

It is an arithmetic number, because the mean of its divisors is an integer number (102121071).

Almost surely, 2^204242141 is an apocalyptic number.

It is an amenable number.

204242141 is a deficient number, since it is larger than the sum of its proper divisors (1).

204242141 is an equidigital number, since it uses as much as digits as its factorization.

204242141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 204242141 is about 14291.3309737057. The cubic root of 204242141 is about 588.9093525436.

Adding to 204242141 its reverse (141242402), we get a palindrome (345484543).

The spelling of 204242141 in words is "two hundred four million, two hundred forty-two thousand, one hundred forty-one".