42820984841 has 4 divisors (see below), whose sum is σ = 43060208400. Its totient is φ = 42581761284.

The previous prime is 42820984819. The next prime is 42820984849. The reversal of 42820984841 is 14848902824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42820984841 is a prime.

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 42820984841.

It is not an unprimeable number, because it can be changed into a prime (42820984849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119611511 + ... + 119611868.

It is an arithmetic number, because the mean of its divisors is an integer number (10765052100).

Almost surely, 2^42820984841 is an apocalyptic number.

It is an amenable number.

42820984841 is a deficient number, since it is larger than the sum of its proper divisors (239223559).

42820984841 is a wasteful number, since it uses less digits than its factorization.

42820984841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239223558.

The product of its (nonzero) digits is 1179648, while the sum is 50.

The spelling of 42820984841 in words is "forty-two billion, eight hundred twenty million, nine hundred eighty-four thousand, eight hundred forty-one".