842120587047 has 4 divisors (see below), whose sum is σ = 1122827449400. Its totient is φ = 561413724696.

The previous prime is 842120587031. The next prime is 842120587067. The reversal of 842120587047 is 740785021248.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 842120587047 - 2⁴ = 842120587031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 842120586987 and 842120587005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842120587067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140353431172 + ... + 140353431177.

It is an arithmetic number, because the mean of its divisors is an integer number (280706862350).

Almost surely, 2^842120587047 is an apocalyptic number.

842120587047 is a deficient number, since it is larger than the sum of its proper divisors (280706862353).

842120587047 is a wasteful number, since it uses less digits than its factorization.

842120587047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280706862352.

The product of its (nonzero) digits is 1003520, while the sum is 48.

The spelling of 842120587047 in words is "eight hundred forty-two billion, one hundred twenty million, five hundred eighty-seven thousand, forty-seven".