40421331320 has 48 divisors (see below), whose sum is σ = 91132254360. Its totient is φ = 16135823616.

The previous prime is 40421331317. The next prime is 40421331343. The reversal of 40421331320 is 2313312404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39129524 + ... + 39130556.

Almost surely, 2^40421331320 is an apocalyptic number.

40421331320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40421331320 is an abundant number, since it is smaller than the sum of its proper divisors (50710923040).

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

40421331320 is an equidigital number, since it uses as much as digits as its factorization.

40421331320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024 (or 1987 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 40421331320 its reverse (2313312404), we get a palindrome (42734643724).

The spelling of 40421331320 in words is "forty billion, four hundred twenty-one million, three hundred thirty-one thousand, three hundred twenty".