20442020042 has 8 divisors (see below), whose sum is σ = 30960729696. Its totient is φ = 10121776812.

The previous prime is 20442020033. The next prime is 20442020051. The reversal of 20442020042 is 24002024402.

It is an interprime number because it is at equal distance from previous prime (20442020033) and next prime (20442020051).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20442019996 and 20442020023.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49616348 + ... + 49616759.

It is an arithmetic number, because the mean of its divisors is an integer number (3870091212).

Almost surely, 2^20442020042 is an apocalyptic number.

20442020042 is a deficient number, since it is larger than the sum of its proper divisors (10518709654).

20442020042 is a wasteful number, since it uses less digits than its factorization.

20442020042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99233212.

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20442020042 its reverse (24002024402), we get a palindrome (44444044444).

The spelling of 20442020042 in words is "twenty billion, four hundred forty-two million, twenty thousand, forty-two".