842431161 has 32 divisors (see below), whose sum is σ = 1330600320. Its totient is φ = 471261120.

The previous prime is 842431153. The next prime is 842431171. The reversal of 842431161 is 161134248.

It is not a de Polignac number, because 842431161 - 2³ = 842431153 is a prime.

It is a super-2 number, since 2×842431161² = 1419380522047615842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (842431111) 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 31 ways as a sum of consecutive naturals, for example, 43795 + ... + 60023.

It is an arithmetic number, because the mean of its divisors is an integer number (41581260).

Almost surely, 2^842431161 is an apocalyptic number.

It is an amenable number.

842431161 is a deficient number, since it is larger than the sum of its proper divisors (488169159).

842431161 is a wasteful number, since it uses less digits than its factorization.

842431161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16278 (or 16256 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 842431161 is about 29024.6647009057. The cubic root of 842431161 is about 944.4481949711.

The spelling of 842431161 in words is "eight hundred forty-two million, four hundred thirty-one thousand, one hundred sixty-one".