842679 has 12 divisors (see below), whose sum is σ = 1229800. Its totient is φ = 555984.

The previous prime is 842657. The next prime is 842701. The reversal of 842679 is 976248.

It is an interprime number because it is at equal distance from previous prime (842657) and next prime (842701).

It is not a de Polignac number, because 842679 - 2⁷ = 842551 is a prime.

It is a Duffinian number.

842679 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 552 + ... + 1410.

2⁸⁴²⁶⁷⁹ is an apocalyptic number.

842679 is a deficient number, since it is larger than the sum of its proper divisors (387121).

842679 is a wasteful number, since it uses less digits than its factorization.

842679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974 (or 971 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 842679 is about 917.9754898689. The cubic root of 842679 is about 94.4540803189.

It can be divided in two parts, 842 and 679, that added together give a square (1521 = 39²).

The spelling of 842679 in words is "eight hundred forty-two thousand, six hundred seventy-nine".