204242002020 has 72 divisors (see below), whose sum is σ = 708038944704. Its totient is φ = 46683885888.

The previous prime is 204242001983. The next prime is 204242002051. The reversal of 204242002020 is 20200242402.

204242002020 is a `hidden beast` number, since 2 + 0 + 42 + 420 + 0 + 202 + 0 = 666.

204242002020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 204242001984 and 204242002002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81047154 + ... + 81049673.

It is an arithmetic number, because the mean of its divisors is an integer number (9833874232).

Almost surely, 2^204242002020 is an apocalyptic number.

204242002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204242002020 is an abundant number, since it is smaller than the sum of its proper divisors (503796942684).

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

204242002020 is a wasteful number, since it uses less digits than its factorization.

204242002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162096849 (or 162096844 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 204242002020 its reverse (20200242402), we get a palindrome (224442244422).

The spelling of 204242002020 in words is "two hundred four billion, two hundred forty-two million, two thousand, twenty".