42420240440 has 64 divisors (see below), whose sum is σ = 99626794560. Its totient is φ = 16225228800.

The previous prime is 42420240433. The next prime is 42420240487. The reversal of 42420240440 is 4404202424.

It is a super-2 number, since 2×42420240440² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4279490 + ... + 4289390.

It is an arithmetic number, because the mean of its divisors is an integer number (1556668665).

Almost surely, 2^42420240440 is an apocalyptic number.

42420240440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42420240440 is an abundant number, since it is smaller than the sum of its proper divisors (57206554120).

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

42420240440 is a wasteful number, since it uses less digits than its factorization.

42420240440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14592 (or 14588 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 42420240440 its reverse (4404202424), we get a palindrome (46824442864).

The spelling of 42420240440 in words is "forty-two billion, four hundred twenty million, two hundred forty thousand, four hundred forty".