20042440130024 has 96 divisors (see below), whose sum is σ = 43224034610520. Its totient is φ = 8678399827968.

The previous prime is 20042440129993. The next prime is 20042440130101. The reversal of 20042440130024 is 42003104424002.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 62595036100 + 19979845093924 = 250190^2 + 4469882^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 20042440129975 and 20042440130002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5800994 + ... + 8586990.

Almost surely, 2^{20042440130024} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20042440130024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21612017305260).

20042440130024 is an abundant number, since it is smaller than the sum of its proper divisors (23181594480496).

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

20042440130024 is a wasteful number, since it uses less digits than its factorization.

20042440130024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786359 (or 2786342 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 20042440130024 its reverse (42003104424002), we get a palindrome (62045544554026).

The spelling of 20042440130024 in words is "twenty trillion, forty-two billion, four hundred forty million, one hundred thirty thousand, twenty-four".