40320432120 has 64 divisors (see below), whose sum is σ = 120994093440. Its totient is φ = 10749200000.

The previous prime is 40320432109. The next prime is 40320432157. The reversal of 40320432120 is 2123402304.

It is a congruent number.

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, 418495 + ... + 505745.

It is an arithmetic number, because the mean of its divisors is an integer number (1890532710).

Almost surely, 2^40320432120 is an apocalyptic number.

40320432120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40320432120 is an abundant number, since it is smaller than the sum of its proper divisors (80673661320).

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

40320432120 is a wasteful number, since it uses less digits than its factorization.

40320432120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91116 (or 91112 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 40320432120 its reverse (2123402304), we get a palindrome (42443834424).

The spelling of 40320432120 in words is "forty billion, three hundred twenty million, four hundred thirty-two thousand, one hundred twenty".