204004042 has 16 divisors (see below), whose sum is σ = 337133664. Its totient is φ = 91810000.

The previous prime is 204004039. The next prime is 204004057. The reversal of 204004042 is 240400402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43684 + ... + 48127.

It is an arithmetic number, because the mean of its divisors is an integer number (21070854).

Almost surely, 2^204004042 is an apocalyptic number.

204004042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

204004042 is a deficient number, since it is larger than the sum of its proper divisors (133129622).

204004042 is a wasteful number, since it uses less digits than its factorization.

204004042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91925.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 204004042 is about 14282.9983546873. The cubic root of 204004042 is about 588.6804196211.

Adding to 204004042 its reverse (240400402), we get a palindrome (444404444).

It can be divided in two parts, 20400 and 4042, that added together give a palindrome (24442).

The spelling of 204004042 in words is "two hundred four million, four thousand, forty-two".