842394315771 has 16 divisors (see below), whose sum is σ = 1249454674720. Its totient is φ = 560937817440.

The previous prime is 842394315703. The next prime is 842394315793. The reversal of 842394315771 is 177513493248.

842394315771 is a `hidden beast` number, since 8 + 4 + 2 + 39 + 4 + 31 + 577 + 1 = 666.

It is not a de Polignac number, because 842394315771 - 2¹⁷ = 842394184699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842394315701) 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, 18265240 + ... + 18311301.

It is an arithmetic number, because the mean of its divisors is an integer number (78090917170).

Almost surely, 2^842394315771 is an apocalyptic number.

842394315771 is a deficient number, since it is larger than the sum of its proper divisors (407060358949).

842394315771 is a wasteful number, since it uses less digits than its factorization.

842394315771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36577403 (or 36577397 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 842394315771 in words is "eight hundred forty-two billion, three hundred ninety-four million, three hundred fifteen thousand, seven hundred seventy-one".