40320000442 has 16 divisors (see below), whose sum is σ = 61651951200. Its totient is φ = 19770982000.

The previous prime is 40320000407. The next prime is 40320000443. The reversal of 40320000442 is 24400002304.

It is not an unprimeable number, because it can be changed into a prime (40320000443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358309 + ... + 457192.

It is an arithmetic number, because the mean of its divisors is an integer number (3853246950).

Almost surely, 2^40320000442 is an apocalyptic number.

40320000442 is a deficient number, since it is larger than the sum of its proper divisors (21331950758).

40320000442 is a wasteful number, since it uses less digits than its factorization.

40320000442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815981.

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 40320000442 its reverse (24400002304), we get a palindrome (64720002746).

The spelling of 40320000442 in words is "forty billion, three hundred twenty million, four hundred forty-two", and thus it is an aban number.