879742 has 8 divisors (see below), whose sum is σ = 1341432. Its totient is φ = 432600.

The previous prime is 879721. The next prime is 879743. The reversal of 879742 is 247978.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879743) by changing a digit.

879742 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 3484 + ... + 3727.

It is an arithmetic number, because the mean of its divisors is an integer number (167679).

2⁸⁷⁹⁷⁴² is an apocalyptic number.

879742 is a deficient number, since it is larger than the sum of its proper divisors (461690).

879742 is a wasteful number, since it uses less digits than its factorization.

879742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7274.

The product of its digits is 28224, while the sum is 37.

The square root of 879742 is about 937.9456274220. The cubic root of 879742 is about 95.8190311780.

The spelling of 879742 in words is "eight hundred seventy-nine thousand, seven hundred forty-two".