43172492140 has 12 divisors (see below), whose sum is σ = 90662233536. Its totient is φ = 17268996848.

The previous prime is 43172492131. The next prime is 43172492177. The reversal of 43172492140 is 4129427134.

It is a self number, because there is not a number n which added to its sum of digits gives 43172492140.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1079312284 + ... + 1079312323.

It is an arithmetic number, because the mean of its divisors is an integer number (7555186128).

Almost surely, 2^43172492140 is an apocalyptic number.

It is an amenable number.

43172492140 is an abundant number, since it is smaller than the sum of its proper divisors (47489741396).

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

43172492140 is a wasteful number, since it uses less digits than its factorization.

43172492140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158624616 (or 2158624614 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 43172492140 in words is "forty-three billion, one hundred seventy-two million, four hundred ninety-two thousand, one hundred forty".