20042362920 has 128 divisors (see below), whose sum is σ = 61915674240. Its totient is φ = 5187010560.

The previous prime is 20042362913. The next prime is 20042362969. The reversal of 20042362920 is 2926324002.

It is a super-2 number, since 2×20042362920² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 939007 + ... + 960113.

It is an arithmetic number, because the mean of its divisors is an integer number (483716205).

Almost surely, 2^20042362920 is an apocalyptic number.

20042362920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20042362920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30957837120).

20042362920 is an abundant number, since it is smaller than the sum of its proper divisors (41873311320).

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

20042362920 is a wasteful number, since it uses less digits than its factorization.

20042362920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21355 (or 21351 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 20042362920 its reverse (2926324002), we get a palindrome (22968686922).

The spelling of 20042362920 in words is "twenty billion, forty-two million, three hundred sixty-two thousand, nine hundred twenty".