204122004042 has 32 divisors (see below), whose sum is σ = 445479874560. Its totient is φ = 61838100720.

The previous prime is 204122003977. The next prime is 204122004103. The reversal of 204122004042 is 240400221402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184042 + ... + 664917.

It is an arithmetic number, because the mean of its divisors is an integer number (13921246080).

Almost surely, 2^204122004042 is an apocalyptic number.

204122004042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

204122004042 is an abundant number, since it is smaller than the sum of its proper divisors (241357870518).

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

204122004042 is a wasteful number, since it uses less digits than its factorization.

204122004042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852618.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 204122004042 its reverse (240400221402), we get a palindrome (444522225444).

The spelling of 204122004042 in words is "two hundred four billion, one hundred twenty-two million, four thousand, forty-two".