20043122420 has 48 divisors (see below), whose sum is σ = 44353431360. Its totient is φ = 7587131904.

The previous prime is 20043122419. The next prime is 20043122431. The reversal of 20043122420 is 2422134002.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20043122392 and 20043122401.

It is a congruent number.

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, 332012 + ... + 387708.

It is an arithmetic number, because the mean of its divisors is an integer number (924029820).

Almost surely, 2^20043122420 is an apocalyptic number.

20043122420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20043122420 is an abundant number, since it is smaller than the sum of its proper divisors (24310308940).

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

20043122420 is a wasteful number, since it uses less digits than its factorization.

20043122420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56672 (or 56670 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20043122420 its reverse (2422134002), we get a palindrome (22465256422).

The spelling of 20043122420 in words is "twenty billion, forty-three million, one hundred twenty-two thousand, four hundred twenty".