20442020043 has 4 divisors (see below), whose sum is σ = 27256026728. Its totient is φ = 13628013360.

The previous prime is 20442020033. The next prime is 20442020051. The reversal of 20442020043 is 34002024402.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20442020043 - 2¹² = 20442015947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20442020033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3407003338 + ... + 3407003343.

It is an arithmetic number, because the mean of its divisors is an integer number (6814006682).

Almost surely, 2^20442020043 is an apocalyptic number.

20442020043 is a deficient number, since it is larger than the sum of its proper divisors (6814006685).

20442020043 is an equidigital number, since it uses as much as digits as its factorization.

20442020043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6814006684.

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 20442020043 its reverse (34002024402), we get a palindrome (54444044445).

The spelling of 20442020043 in words is "twenty billion, four hundred forty-two million, twenty thousand, forty-three".