842320771 has 2 divisors, whose sum is σ = 842320772. Its totient is φ = 842320770.

The previous prime is 842320763. The next prime is 842320807. The reversal of 842320771 is 177023248.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 842320771 - 2³ = 842320763 is a prime.

It is not a weakly prime, because it can be changed into another prime (842320751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421160385 + 421160386.

It is an arithmetic number, because the mean of its divisors is an integer number (421160386).

Almost surely, 2^842320771 is an apocalyptic number.

842320771 is a deficient number, since it is larger than the sum of its proper divisors (1).

842320771 is an equidigital number, since it uses as much as digits as its factorization.

842320771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 842320771 is about 29022.7629801161. The cubic root of 842320771 is about 944.4069404864.

The spelling of 842320771 in words is "eight hundred forty-two million, three hundred twenty thousand, seven hundred seventy-one".