842179 has 4 divisors (see below), whose sum is σ = 906976. Its totient is φ = 777384.

The previous prime is 842173. The next prime is 842183. The reversal of 842179 is 971248.

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 842179 - 2⁵ = 842147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 842179.

It is not an unprimeable number, because it can be changed into a prime (842173) 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, 32379 + ... + 32404.

It is an arithmetic number, because the mean of its divisors is an integer number (226744).

2⁸⁴²¹⁷⁹ is an apocalyptic number.

842179 is a deficient number, since it is larger than the sum of its proper divisors (64797).

842179 is a wasteful number, since it uses less digits than its factorization.

842179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64796.

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

The square root of 842179 is about 917.7031110332. The cubic root of 842179 is about 94.4353953139.

The spelling of 842179 in words is "eight hundred forty-two thousand, one hundred seventy-nine".