20112403420 has 24 divisors (see below), whose sum is σ = 42257217744. Its totient is φ = 8040928896.

The previous prime is 20112403397. The next prime is 20112403463. The reversal of 20112403420 is 2430421102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210969 + ... + 291088.

It is an arithmetic number, because the mean of its divisors is an integer number (1760717406).

Almost surely, 2^20112403420 is an apocalyptic number.

20112403420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112403420 is an abundant number, since it is smaller than the sum of its proper divisors (22144814324).

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

20112403420 is a wasteful number, since it uses less digits than its factorization.

20112403420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504069 (or 504067 counting only the distinct ones).

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

Adding to 20112403420 its reverse (2430421102), we get a palindrome (22542824522).

The spelling of 20112403420 in words is "twenty billion, one hundred twelve million, four hundred three thousand, four hundred twenty".