842791 has 2 divisors, whose sum is σ = 842792. Its totient is φ = 842790.

The previous prime is 842771. The next prime is 842801. The reversal of 842791 is 197248.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 842791 - 2⁵ = 842759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421395 + 421396.

It is an arithmetic number, because the mean of its divisors is an integer number (421396).

2⁸⁴²⁷⁹¹ is an apocalyptic number.

842791 is a deficient number, since it is larger than the sum of its proper divisors (1).

842791 is an equidigital number, since it uses as much as digits as its factorization.

842791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 31.

The square root of 842791 is about 918.0364916494. The cubic root of 842791 is about 94.4582647467.

The spelling of 842791 in words is "eight hundred forty-two thousand, seven hundred ninety-one".