79642 has 4 divisors (see below), whose sum is σ = 119466. Its totient is φ = 39820.

The previous prime is 79633. The next prime is 79657. The reversal of 79642 is 24697.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 63001 + 16641 = 251^2 + 129^2 .

It is a d-powerful number, because it can be written as 7⁴ + 9⁵ + 6⁴ + 4⁷ + 2⁹ .

It is a self number, because there is not a number n which added to its sum of digits gives 79642.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19909 + ... + 19912.

2⁷⁹⁶⁴² is an apocalyptic number.

79642 is a deficient number, since it is larger than the sum of its proper divisors (39824).

79642 is a wasteful number, since it uses less digits than its factorization.

79642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39823.

The product of its digits is 3024, while the sum is 28.

The square root of 79642 is about 282.2091423041. The cubic root of 79642 is about 43.0243237180.

Subtracting from 79642 its reverse (24697), we obtain a palindrome (54945).

It can be divided in two parts, 796 and 42, that added together give a palindrome (838).

The spelling of 79642 in words is "seventy-nine thousand, six hundred forty-two".