42231112440 has 64 divisors (see below), whose sum is σ = 138210917760. Its totient is φ = 10237845120.

The previous prime is 42231112423. The next prime is 42231112447. The reversal of 42231112440 is 4421113224.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 42231112440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42231112447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15995314 + ... + 15997953.

It is an arithmetic number, because the mean of its divisors is an integer number (2159545590).

Almost surely, 2^42231112440 is an apocalyptic number.

42231112440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42231112440 is an abundant number, since it is smaller than the sum of its proper divisors (95979805320).

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

42231112440 is a wasteful number, since it uses less digits than its factorization.

42231112440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31993292 (or 31993288 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 42231112440 its reverse (4421113224), we get a palindrome (46652225664).

The spelling of 42231112440 in words is "forty-two billion, two hundred thirty-one million, one hundred twelve thousand, four hundred forty".