42379870990391 has 16 divisors (see below), whose sum is σ = 46299799192608. Its totient is φ = 38471147904000.

The previous prime is 42379870990343. The next prime is 42379870990417. The reversal of 42379870990391 is 19309907897324.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42379870990391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42379870990291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 499761491 + ... + 499846283.

It is an arithmetic number, because the mean of its divisors is an integer number (2893737449538).

Almost surely, 2^{42379870990391} is an apocalyptic number.

42379870990391 is a deficient number, since it is larger than the sum of its proper divisors (3919928202217).

42379870990391 is a wasteful number, since it uses less digits than its factorization.

42379870990391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150322.

The product of its (nonzero) digits is 185177664, while the sum is 71.

The spelling of 42379870990391 in words is "forty-two trillion, three hundred seventy-nine billion, eight hundred seventy million, nine hundred ninety thousand, three hundred ninety-one".