42781702892 has 24 divisors (see below), whose sum is σ = 77291786880. Its totient is φ = 20698490880.

The previous prime is 42781702891. The next prime is 42781702907. The reversal of 42781702892 is 29820718724.

It is a super-2 number, since 2×42781702892² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42781702892.

It is not an unprimeable number, because it can be changed into a prime (42781702891) 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, 1685834 + ... + 1711022.

It is an arithmetic number, because the mean of its divisors is an integer number (3220491120).

Almost surely, 2^42781702892 is an apocalyptic number.

It is an amenable number.

42781702892 is a deficient number, since it is larger than the sum of its proper divisors (34510083988).

42781702892 is a wasteful number, since it uses less digits than its factorization.

42781702892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38921 (or 38919 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 50.

The spelling of 42781702892 in words is "forty-two billion, seven hundred eighty-one million, seven hundred two thousand, eight hundred ninety-two".