79742 has 8 divisors (see below), whose sum is σ = 128856. Its totient is φ = 36792.

The previous prime is 79699. The next prime is 79757. The reversal of 79742 is 24797.

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

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 79742.

It is an unprimeable number.

79742 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1508 + ... + 1559.

It is an arithmetic number, because the mean of its divisors is an integer number (16107).

2⁷⁹⁷⁴² is an apocalyptic number.

79742 is a deficient number, since it is larger than the sum of its proper divisors (49114).

79742 is a wasteful number, since it uses less digits than its factorization.

79742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3082.

The product of its digits is 3528, while the sum is 29.

The square root of 79742 is about 282.3862602890. The cubic root of 79742 is about 43.0423235710.

Subtracting from 79742 its reverse (24797), we obtain a palindrome (54945).

The spelling of 79742 in words is "seventy-nine thousand, seven hundred forty-two".