20200020420 has 48 divisors (see below), whose sum is σ = 57241517760. Its totient is φ = 5321771136.

The previous prime is 20200020413. The next prime is 20200020437. The reversal of 20200020420 is 2402000202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20200020396 and 20200020405.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2023135 + ... + 2033094.

It is an arithmetic number, because the mean of its divisors is an integer number (1192531620).

Almost surely, 2^20200020420 is an apocalyptic number.

20200020420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200020420 is an abundant number, since it is smaller than the sum of its proper divisors (37041497340).

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

20200020420 is a wasteful number, since it uses less digits than its factorization.

20200020420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4056324 (or 4056322 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

Adding to 20200020420 its reverse (2402000202), we get a palindrome (22602020622).

The spelling of 20200020420 in words is "twenty billion, two hundred million, twenty thousand, four hundred twenty".