204042021024 has 24 divisors (see below), whose sum is σ = 535610305440. Its totient is φ = 68014006976.

The previous prime is 204042021017. The next prime is 204042021089. The reversal of 204042021024 is 420120240402.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1062718764 + ... + 1062718955.

It is an arithmetic number, because the mean of its divisors is an integer number (22317096060).

Almost surely, 2^204042021024 is an apocalyptic number.

204042021024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

204042021024 is an abundant number, since it is smaller than the sum of its proper divisors (331568284416).

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

204042021024 is a wasteful number, since it uses less digits than its factorization.

204042021024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125437732 (or 2125437724 counting only the distinct ones).

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

Adding to 204042021024 its reverse (420120240402), we get a palindrome (624162261426).

The spelling of 204042021024 in words is "two hundred four billion, forty-two million, twenty-one thousand, twenty-four".