20420013132 has 72 divisors (see below), whose sum is σ = 52023535200. Its totient is φ = 6753204480.

The previous prime is 20420013121. The next prime is 20420013179. The reversal of 20420013132 is 23131002402.

It is a super-2 number, since 2×20420013132² (a number of 21 digits) contains 22 as substring.

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

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, 6397657 + ... + 6400847.

It is an arithmetic number, because the mean of its divisors is an integer number (722549100).

Almost surely, 2^20420013132 is an apocalyptic number.

It is an amenable number.

20420013132 is an abundant number, since it is smaller than the sum of its proper divisors (31603522068).

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

20420013132 is a wasteful number, since it uses less digits than its factorization.

20420013132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4543 (or 4538 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20420013132 its reverse (23131002402), we get a palindrome (43551015534).

The spelling of 20420013132 in words is "twenty billion, four hundred twenty million, thirteen thousand, one hundred thirty-two".