143279 has 4 divisors (see below), whose sum is σ = 150840. Its totient is φ = 135720.

The previous prime is 143263. The next prime is 143281. The reversal of 143279 is 972341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 972341 = 29 ⋅33529.

It is a cyclic number.

It is not a de Polignac number, because 143279 - 2⁴ = 143263 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143279.

It is not an unprimeable number, because it can be changed into a prime (143239) 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, 3752 + ... + 3789.

It is an arithmetic number, because the mean of its divisors is an integer number (37710).

2¹⁴³²⁷⁹ is an apocalyptic number.

143279 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

143279 is a deficient number, since it is larger than the sum of its proper divisors (7561).

143279 is an equidigital number, since it uses as much as digits as its factorization.

143279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7560.

The product of its digits is 1512, while the sum is 26.

The square root of 143279 is about 378.5221261697. The cubic root of 143279 is about 52.3272020981.

The spelling of 143279 in words is "one hundred forty-three thousand, two hundred seventy-nine".