42844142868 has 12 divisors (see below), whose sum is σ = 99969666720. Its totient is φ = 14281380952.

The previous prime is 42844142833. The next prime is 42844142881. The reversal of 42844142868 is 86824144824.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 42844142868.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1785172608 + ... + 1785172631.

It is an arithmetic number, because the mean of its divisors is an integer number (8330805560).

Almost surely, 2^42844142868 is an apocalyptic number.

It is an amenable number.

42844142868 is an abundant number, since it is smaller than the sum of its proper divisors (57125523852).

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

42844142868 is a wasteful number, since it uses less digits than its factorization.

42844142868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3570345246 (or 3570345244 counting only the distinct ones).

The product of its digits is 3145728, while the sum is 51.

The spelling of 42844142868 in words is "forty-two billion, eight hundred forty-four million, one hundred forty-two thousand, eight hundred sixty-eight".