40012421320 has 64 divisors (see below), whose sum is σ = 90607507200. Its totient is φ = 15902092800.

The previous prime is 40012421299. The next prime is 40012421363. The reversal of 40012421320 is 2312421004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16831972 + ... + 16834348.

It is an arithmetic number, because the mean of its divisors is an integer number (1415742300).

Almost surely, 2^40012421320 is an apocalyptic number.

40012421320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40012421320 is an abundant number, since it is smaller than the sum of its proper divisors (50595085880).

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

40012421320 is a wasteful number, since it uses less digits than its factorization.

40012421320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4918 (or 4914 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 40012421320 its reverse (2312421004), we get a palindrome (42324842324).

The spelling of 40012421320 in words is "forty billion, twelve million, four hundred twenty-one thousand, three hundred twenty".