20423104120 has 64 divisors (see below), whose sum is σ = 46520697600. Its totient is φ = 8068346880.

The previous prime is 20423104073. The next prime is 20423104129. The reversal of 20423104120 is 2140132402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423104129) 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, 3774457 + ... + 3779863.

It is an arithmetic number, because the mean of its divisors is an integer number (726885900).

Almost surely, 2^20423104120 is an apocalyptic number.

20423104120 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 20423104120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23260348800).

20423104120 is an abundant number, since it is smaller than the sum of its proper divisors (26097593480).

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

20423104120 is a wasteful number, since it uses less digits than its factorization.

20423104120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6568 (or 6564 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20423104120 its reverse (2140132402), we get a palindrome (22563236522).

The spelling of 20423104120 in words is "twenty billion, four hundred twenty-three million, one hundred four thousand, one hundred twenty".