842971 has 4 divisors (see below), whose sum is σ = 865792. Its totient is φ = 820152.

The previous prime is 842969. The next prime is 842977. The reversal of 842971 is 179248.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 842971 - 2¹ = 842969 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (842977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11355 + ... + 11428.

It is an arithmetic number, because the mean of its divisors is an integer number (216448).

2⁸⁴²⁹⁷¹ is an apocalyptic number.

842971 is a deficient number, since it is larger than the sum of its proper divisors (22821).

842971 is a wasteful number, since it uses less digits than its factorization.

842971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22820.

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

The square root of 842971 is about 918.1345217342. The cubic root of 842971 is about 94.4649889434.

The spelling of 842971 in words is "eight hundred forty-two thousand, nine hundred seventy-one".