842920644012 has 24 divisors (see below), whose sum is σ = 1968023741376. Its totient is φ = 280800847248.

The previous prime is 842920643933. The next prime is 842920644029. The reversal of 842920644012 is 210446029248.

It is a super-2 number, since 2×842920644012² (a number of 25 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 21567258 + ... + 21606305.

It is an arithmetic number, because the mean of its divisors is an integer number (82000989224).

Almost surely, 2^842920644012 is an apocalyptic number.

It is an amenable number.

842920644012 is an abundant number, since it is smaller than the sum of its proper divisors (1125103097364).

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

842920644012 is a wasteful number, since it uses less digits than its factorization.

842920644012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43175197 (or 43175195 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 842920644012 in words is "eight hundred forty-two billion, nine hundred twenty million, six hundred forty-four thousand, twelve".