279142 has 4 divisors (see below), whose sum is σ = 418716. Its totient is φ = 139570.

The previous prime is 279137. The next prime is 279143. The reversal of 279142 is 241972.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69784 + ... + 69787.

It is an arithmetic number, because the mean of its divisors is an integer number (104679).

2²⁷⁹¹⁴² is an apocalyptic number.

279142 is a deficient number, since it is larger than the sum of its proper divisors (139574).

279142 is a wasteful number, since it uses less digits than its factorization.

279142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139573.

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

The square root of 279142 is about 528.3389063849. The cubic root of 279142 is about 65.3544346204.

The spelling of 279142 in words is "two hundred seventy-nine thousand, one hundred forty-two".