40320421422 has 16 divisors (see below), whose sum is σ = 80884474752. Its totient is φ = 13399535160.

The previous prime is 40320421397. The next prime is 40320421439. The reversal of 40320421422 is 22412402304.

It is a junction number, because it is equal to n+sod(n) for n = 40320421392 and 40320421401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10149178 + ... + 10153149.

It is an arithmetic number, because the mean of its divisors is an integer number (5055279672).

Almost surely, 2^40320421422 is an apocalyptic number.

40320421422 is an abundant number, since it is smaller than the sum of its proper divisors (40564053330).

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

40320421422 is a wasteful number, since it uses less digits than its factorization.

40320421422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20302663.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 40320421422 its reverse (22412402304), we get a palindrome (62732823726).

The spelling of 40320421422 in words is "forty billion, three hundred twenty million, four hundred twenty-one thousand, four hundred twenty-two".