842079 has 8 divisors (see below), whose sum is σ = 1283200. Its totient is φ = 481176.

The previous prime is 842077. The next prime is 842081. The reversal of 842079 is 970248.

842079 = T₄₈₇ + T₄₈₈ + ... + T₄₉₃.

It is an interprime number because it is at equal distance from previous prime (842077) and next prime (842081).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 842079 - 2¹ = 842077 is a prime.

It is a Duffinian number.

842079 is a modest number, since divided by 2079 gives 84 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842071) 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 7 ways as a sum of consecutive naturals, for example, 20029 + ... + 20070.

It is an arithmetic number, because the mean of its divisors is an integer number (160400).

2⁸⁴²⁰⁷⁹ is an apocalyptic number.

842079 is a deficient number, since it is larger than the sum of its proper divisors (441121).

842079 is a wasteful number, since it uses less digits than its factorization.

842079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40109.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 842079 is about 917.6486255643. The cubic root of 842079 is about 94.4316574256.

The spelling of 842079 in words is "eight hundred forty-two thousand, seventy-nine".