842255971 has 6 divisors (see below), whose sum is σ = 850065972. Its totient is φ = 834517080.

The previous prime is 842255951. The next prime is 842256001. The reversal of 842255971 is 179552248.

It is not a de Polignac number, because 842255971 - 2²⁵ = 808701539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842255941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23565 + ... + 47326.

It is an arithmetic number, because the mean of its divisors is an integer number (141677662).

Almost surely, 2^842255971 is an apocalyptic number.

842255971 is a deficient number, since it is larger than the sum of its proper divisors (7810001).

842255971 is an equidigital number, since it uses as much as digits as its factorization.

842255971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71109 (or 71000 counting only the distinct ones).

The product of its digits is 201600, while the sum is 43.

The square root of 842255971 is about 29021.6465935343. The cubic root of 842255971 is about 944.3827220250.

The spelling of 842255971 in words is "eight hundred forty-two million, two hundred fifty-five thousand, nine hundred seventy-one".