204420420420 has 24 divisors (see below), whose sum is σ = 572377177344. Its totient is φ = 54512112096.

The previous prime is 204420420383. The next prime is 204420420437. The reversal of 204420420420 is 24024024402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1703503444 + ... + 1703503563.

It is an arithmetic number, because the mean of its divisors is an integer number (23849049056).

Almost surely, 2^204420420420 is an apocalyptic number.

204420420420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204420420420 is an abundant number, since it is smaller than the sum of its proper divisors (367956756924).

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

204420420420 is a wasteful number, since it uses less digits than its factorization.

204420420420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407007019 (or 3407007017 counting only the distinct ones).

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

Adding to 204420420420 its reverse (24024024402), we get a palindrome (228444444822).

The spelling of 204420420420 in words is "two hundred four billion, four hundred twenty million, four hundred twenty thousand, four hundred twenty".