3921047180842 has 16 divisors (see below), whose sum is σ = 6469285961664. Its totient is φ = 1782294171900.

The previous prime is 3921047180837. The next prime is 3921047180857. The reversal of 3921047180842 is 2480817401293.

It is a super-2 number, since 2×3921047180842² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 736482534 + ... + 736487857.

It is an arithmetic number, because the mean of its divisors is an integer number (404330372604).

Almost surely, 2^{3921047180842} is an apocalyptic number.

3921047180842 is a deficient number, since it is larger than the sum of its proper divisors (2548238780822).

3921047180842 is a wasteful number, since it uses less digits than its factorization.

3921047180842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472970426 (or 1472970404 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 3921047180842 in words is "three trillion, nine hundred twenty-one billion, forty-seven million, one hundred eighty thousand, eight hundred forty-two".