204642233 has 2 divisors, whose sum is σ = 204642234. Its totient is φ = 204642232.

The previous prime is 204642223. The next prime is 204642271. The reversal of 204642233 is 332246402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112635769 + 92006464 = 10613^2 + 9592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204642233 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (204642223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102321116 + 102321117.

It is an arithmetic number, because the mean of its divisors is an integer number (102321117).

Almost surely, 2^204642233 is an apocalyptic number.

It is an amenable number.

204642233 is a deficient number, since it is larger than the sum of its proper divisors (1).

204642233 is an equidigital number, since it uses as much as digits as its factorization.

204642233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 204642233 is about 14305.3218418881. The cubic root of 204642233 is about 589.2936418898.

Adding to 204642233 its reverse (332246402), we get a palindrome (536888635).

The spelling of 204642233 in words is "two hundred four million, six hundred forty-two thousand, two hundred thirty-three".