204242442220 has 24 divisors (see below), whose sum is σ = 435310760304. Its totient is φ = 80477618496.

The previous prime is 204242442211. The next prime is 204242442251. The reversal of 204242442220 is 22244242402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76208527 + ... + 76211206.

It is an arithmetic number, because the mean of its divisors is an integer number (18137948346).

Almost surely, 2^204242442220 is an apocalyptic number.

204242442220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204242442220 is an abundant number, since it is smaller than the sum of its proper divisors (231068318084).

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

204242442220 is a wasteful number, since it uses less digits than its factorization.

204242442220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152419809 (or 152419807 counting only the distinct ones).

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

Adding to 204242442220 its reverse (22244242402), we get a palindrome (226486684622).

The spelling of 204242442220 in words is "two hundred four billion, two hundred forty-two million, four hundred forty-two thousand, two hundred twenty".