842479 has 16 divisors (see below), whose sum is σ = 1008000. Its totient is φ = 695520.

The previous prime is 842477. The next prime is 842483. The reversal of 842479 is 974248.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 842479 - 2¹ = 842477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5992 + ... + 6130.

It is an arithmetic number, because the mean of its divisors is an integer number (63000).

2⁸⁴²⁴⁷⁹ is an apocalyptic number.

842479 is a deficient number, since it is larger than the sum of its proper divisors (165521).

842479 is a wasteful number, since it uses less digits than its factorization.

842479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198.

The product of its digits is 16128, while the sum is 34.

The square root of 842479 is about 917.8665480341. The cubic root of 842479 is about 94.4466072041.

Subtracting 842479 from its reverse (974248), we obtain a square (131769 = 363²).

The spelling of 842479 in words is "eight hundred forty-two thousand, four hundred seventy-nine".