42820984931 has 8 divisors (see below), whose sum is σ = 45188267280. Its totient is φ = 40465057248.

The previous prime is 42820984867. The next prime is 42820984961. The reversal of 42820984931 is 13948902824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42820984931 - 2⁶ = 42820984867 is a prime.

It is a super-2 number, since 2×42820984931² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42820984931.

It is not an unprimeable number, because it can be changed into a prime (42820984961) 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, 2830916 + ... + 2846001.

It is an arithmetic number, because the mean of its divisors is an integer number (5648533410).

Almost surely, 2^42820984931 is an apocalyptic number.

42820984931 is a deficient number, since it is larger than the sum of its proper divisors (2367282349).

42820984931 is a wasteful number, since it uses less digits than its factorization.

42820984931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5677333.

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 42820984931 in words is "forty-two billion, eight hundred twenty million, nine hundred eighty-four thousand, nine hundred thirty-one".