20044440042 has 32 divisors (see below), whose sum is σ = 44157934080. Its totient is φ = 6015099120.

The previous prime is 20044440041. The next prime is 20044440149. The reversal of 20044440042 is 24004444002.

It is a junction number, because it is equal to n+sod(n) for n = 20044439994 and 20044440021.

It is not an unprimeable number, because it can be changed into a prime (20044440041) 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, 1467492 + ... + 1481087.

It is an arithmetic number, because the mean of its divisors is an integer number (1379935440).

Almost surely, 2^20044440042 is an apocalyptic number.

20044440042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20044440042 is an abundant number, since it is smaller than the sum of its proper divisors (24113494038).

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

20044440042 is a wasteful number, since it uses less digits than its factorization.

20044440042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948698.

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 20044440042 its reverse (24004444002), we get a palindrome (44048884044).

The spelling of 20044440042 in words is "twenty billion, forty-four million, four hundred forty thousand, forty-two".