142959 has 4 divisors (see below), whose sum is σ = 190616. Its totient is φ = 95304.

The previous prime is 142949. The next prime is 142963. The reversal of 142959 is 959241.

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: 959241 = 3 ⋅319747.

It is not a de Polignac number, because 142959 - 2¹² = 138863 is a prime.

It is a D-number.

It is a Duffinian number.

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 142959.

It is not an unprimeable number, because it can be changed into a prime (142939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23824 + ... + 23829.

It is an arithmetic number, because the mean of its divisors is an integer number (47654).

2¹⁴²⁹⁵⁹ is an apocalyptic number.

142959 is a deficient number, since it is larger than the sum of its proper divisors (47657).

142959 is an equidigital number, since it uses as much as digits as its factorization.

142959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47656.

The product of its digits is 3240, while the sum is 30.

The square root of 142959 is about 378.0991933342. The cubic root of 142959 is about 52.2882171200.

The spelling of 142959 in words is "one hundred forty-two thousand, nine hundred fifty-nine".