142279 has 4 divisors (see below), whose sum is σ = 144160. Its totient is φ = 140400.

The previous prime is 142271. The next prime is 142297. The reversal of 142279 is 972241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 972241 = 227 ⋅4283.

It is a cyclic number.

It is not a de Polignac number, because 142279 - 2³ = 142271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142271) 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, 822 + ... + 979.

It is an arithmetic number, because the mean of its divisors is an integer number (36040).

2¹⁴²²⁷⁹ is an apocalyptic number.

142279 is a deficient number, since it is larger than the sum of its proper divisors (1881).

142279 is an equidigital number, since it uses as much as digits as its factorization.

142279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880.

The product of its digits is 1008, while the sum is 25.

The square root of 142279 is about 377.1988865307. The cubic root of 142279 is about 52.2051804628.

The spelling of 142279 in words is "one hundred forty-two thousand, two hundred seventy-nine".