204040404042 has 8 divisors (see below), whose sum is σ = 408080808096. Its totient is φ = 68013468012.

The previous prime is 204040404013. The next prime is 204040404049. The reversal of 204040404042 is 240404040402.

It is a sphenic number, since it is the product of 3 distinct primes.

204040404042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (204040404049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17003366998 + ... + 17003367009.

It is an arithmetic number, because the mean of its divisors is an integer number (51010101012).

Almost surely, 2^204040404042 is an apocalyptic number.

204040404042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204040404042 is a wasteful number, since it uses less digits than its factorization.

204040404042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34006734012.

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 204040404042 its reverse (240404040402), we get a palindrome (444444444444).

The spelling of 204040404042 in words is "two hundred four billion, forty million, four hundred four thousand, forty-two".