204044242042 has 4 divisors (see below), whose sum is σ = 306066363066. Its totient is φ = 102022121020.

The previous prime is 204044241979. The next prime is 204044242043. The reversal of 204044242042 is 240242440402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 165851748001 + 38192494041 = 407249^2 + 195429^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 204044242042.

It is not an unprimeable number, because it can be changed into a prime (204044242043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51011060509 + ... + 51011060512.

Almost surely, 2^204044242042 is an apocalyptic number.

204044242042 is a deficient number, since it is larger than the sum of its proper divisors (102022121024).

204044242042 is a wasteful number, since it uses less digits than its factorization.

204044242042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102022121023.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 204044242042 its reverse (240242440402), we get a palindrome (444286682444).

It can be divided in two parts, 20404424 and 2042, that added together give a triangular number (20406466 = T₆₃₈₈).

The spelling of 204044242042 in words is "two hundred four billion, forty-four million, two hundred forty-two thousand, forty-two".