204242305020 has 48 divisors (see below), whose sum is σ = 615869106720. Its totient is φ = 50275028736.

The previous prime is 204242305009. The next prime is 204242305027. The reversal of 204242305020 is 20503242402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204242305027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130923775 + ... + 130925334.

It is an arithmetic number, because the mean of its divisors is an integer number (12830606390).

Almost surely, 2^204242305020 is an apocalyptic number.

204242305020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204242305020 is an abundant number, since it is smaller than the sum of its proper divisors (411626801700).

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

204242305020 is a wasteful number, since it uses less digits than its factorization.

204242305020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261849134 (or 261849132 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

Adding to 204242305020 its reverse (20503242402), we get a palindrome (224745547422).

The spelling of 204242305020 in words is "two hundred four billion, two hundred forty-two million, three hundred five thousand, twenty".