40320421044392 has 16 divisors (see below), whose sum is σ = 75736517993460. Its totient is φ = 20124016246144.

The previous prime is 40320421044313. The next prime is 40320421044427. The reversal of 40320421044392 is 29344012402304.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34317499636996 + 6002921407396 = 5858114^2 + 2450086^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4524279773 + ... + 4524288684.

Almost surely, 2^{40320421044392} is an apocalyptic number.

It is an amenable number.

40320421044392 is a deficient number, since it is larger than the sum of its proper divisors (35416096949068).

40320421044392 is a wasteful number, since it uses less digits than its factorization.

40320421044392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9048569020 (or 9048569016 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

Adding to 40320421044392 its reverse (29344012402304), we get a palindrome (69664433446696).

The spelling of 40320421044392 in words is "forty trillion, three hundred twenty billion, four hundred twenty-one million, forty-four thousand, three hundred ninety-two".