42040424242020 has 24 divisors (see below), whose sum is σ = 117713187877824. Its totient is φ = 11210779797856.

The previous prime is 42040424241967. The next prime is 42040424242043. The reversal of 42040424242020 is 2024242404024.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350336868624 + ... + 350336868743.

It is an arithmetic number, because the mean of its divisors is an integer number (4904716161576).

Almost surely, 2^{42040424242020} is an apocalyptic number.

It is an amenable number.

42040424242020 is an abundant number, since it is smaller than the sum of its proper divisors (75672763635804).

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

42040424242020 is a wasteful number, since it uses less digits than its factorization.

42040424242020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700673737379 (or 700673737377 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 42040424242020 its reverse (2024242404024), we get a palindrome (44064666646044).

The spelling of 42040424242020 in words is "forty-two trillion, forty billion, four hundred twenty-four million, two hundred forty-two thousand, twenty".