842317 has 4 divisors (see below), whose sum is σ = 962656. Its totient is φ = 721980.

The previous prime is 842311. The next prime is 842321. The reversal of 842317 is 713248.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 842317 - 2¹¹ = 840269 is a prime.

It is a Duffinian number.

842317 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 842291 and 842300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842311) 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 in 3 ways as a sum of consecutive naturals, for example, 60159 + ... + 60172.

It is an arithmetic number, because the mean of its divisors is an integer number (240664).

2⁸⁴²³¹⁷ is an apocalyptic number.

It is an amenable number.

842317 is a deficient number, since it is larger than the sum of its proper divisors (120339).

842317 is a wasteful number, since it uses less digits than its factorization.

842317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120338.

The product of its digits is 1344, while the sum is 25.

The square root of 842317 is about 917.7782956684. The cubic root of 842317 is about 94.4405531141.

It can be divided in two parts, 84 and 2317, that added together give a 4-th power (2401 = 7⁴).

The spelling of 842317 in words is "eight hundred forty-two thousand, three hundred seventeen".