79142 has 8 divisors (see below), whose sum is σ = 135696. Its totient is φ = 33912.

The previous prime is 79139. The next prime is 79147. The reversal of 79142 is 24197.

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 (79147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2813 + ... + 2840.

It is an arithmetic number, because the mean of its divisors is an integer number (16962).

2⁷⁹¹⁴² is an apocalyptic number.

79142 is a deficient number, since it is larger than the sum of its proper divisors (56554).

79142 is a wasteful number, since it uses less digits than its factorization.

79142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5662.

The product of its digits is 504, while the sum is 23.

The square root of 79142 is about 281.3218797037. The cubic root of 79142 is about 42.9340977150.

Subtracting from 79142 its reverse (24197), we obtain a palindrome (54945).

The spelling of 79142 in words is "seventy-nine thousand, one hundred forty-two".