142579 has 4 divisors (see below), whose sum is σ = 150984. Its totient is φ = 134176.

The previous prime is 142573. The next prime is 142589. The reversal of 142579 is 975241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 975241 = 29 ⋅33629.

It is a cyclic number.

It is not a de Polignac number, because 142579 - 2⁵ = 142547 is a prime.

It is a Duffinian number.

142579 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (142573) 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, 4177 + ... + 4210.

It is an arithmetic number, because the mean of its divisors is an integer number (37746).

2¹⁴²⁵⁷⁹ is an apocalyptic number.

142579 is a deficient number, since it is larger than the sum of its proper divisors (8405).

142579 is an equidigital number, since it uses as much as digits as its factorization.

142579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8404.

The product of its digits is 2520, while the sum is 28.

The square root of 142579 is about 377.5963453213. The cubic root of 142579 is about 52.2418468235.

It can be divided in two parts, 1425 and 79, that multiplied together give a triangular number (112575 = T₄₇₄).

The spelling of 142579 in words is "one hundred forty-two thousand, five hundred seventy-nine".