42442142544 has 120 divisors (see below), whose sum is σ = 125207070560. Its totient is φ = 13383864576.

The previous prime is 42442142537. The next prime is 42442142593. The reversal of 42442142544 is 44524124424.

42442142544 is a `hidden beast` number, since 424 + 42 + 142 + 54 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 42442142499 and 42442142508.

It is a congruent number.

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, 1994907 + ... + 2016069.

Almost surely, 2^42442142544 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 42442142544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62603535280).

42442142544 is an abundant number, since it is smaller than the sum of its proper divisors (82764928016).

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

42442142544 is a wasteful number, since it uses less digits than its factorization.

42442142544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21929 (or 21920 counting only the distinct ones).

The product of its digits is 163840, while the sum is 36.

Adding to 42442142544 its reverse (44524124424), we get a palindrome (86966266968).

The spelling of 42442142544 in words is "forty-two billion, four hundred forty-two million, one hundred forty-two thousand, five hundred forty-four".