204311042 has 16 divisors (see below), whose sum is σ = 330865080. Its totient is φ = 94061952.

The previous prime is 204311033. The next prime is 204311053. The reversal of 204311042 is 240113402.

It can be written as a sum of positive squares in 4 ways, for example, as 203889841 + 421201 = 14279^2 + 649^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 204311042.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1028 + ... + 20240.

Almost surely, 2^204311042 is an apocalyptic number.

204311042 is a deficient number, since it is larger than the sum of its proper divisors (126554038).

204311042 is a wasteful number, since it uses less digits than its factorization.

204311042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19637.

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

The square root of 204311042 is about 14293.7413576712. The cubic root of 204311042 is about 588.9755678721.

Adding to 204311042 its reverse (240113402), we get a palindrome (444424444).

The spelling of 204311042 in words is "two hundred four million, three hundred eleven thousand, forty-two".