842279 has 2 divisors, whose sum is σ = 842280. Its totient is φ = 842278.

The previous prime is 842267. The next prime is 842291. The reversal of 842279 is 972248.

It is a balanced prime because it is at equal distance from previous prime (842267) and next prime (842291).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-842279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842209) 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 as a sum of consecutive naturals, namely, 421139 + 421140.

It is an arithmetic number, because the mean of its divisors is an integer number (421140).

2⁸⁴²²⁷⁹ is an apocalyptic number.

842279 is a deficient number, since it is larger than the sum of its proper divisors (1).

842279 is an equidigital number, since it uses as much as digits as its factorization.

842279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 842279 is about 917.7575932674. The cubic root of 842279 is about 94.4391329065.

The spelling of 842279 in words is "eight hundred forty-two thousand, two hundred seventy-nine".