142523 has 4 divisors (see below), whose sum is σ = 143280. Its totient is φ = 141768.

The previous prime is 142501. The next prime is 142529. The reversal of 142523 is 325241.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 142523 - 2¹⁰ = 141499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142529) 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, 161 + ... + 557.

It is an arithmetic number, because the mean of its divisors is an integer number (35820).

2¹⁴²⁵²³ is an apocalyptic number.

142523 is a deficient number, since it is larger than the sum of its proper divisors (757).

142523 is an equidigital number, since it uses as much as digits as its factorization.

142523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756.

The product of its digits is 240, while the sum is 17.

The square root of 142523 is about 377.5221847786. The cubic root of 142523 is about 52.2350063432.

Adding to 142523 its reverse (325241), we get a palindrome (467764).

It can be divided in two parts, 1 and 42523, that added together give a palindrome (42524).

The spelling of 142523 in words is "one hundred forty-two thousand, five hundred twenty-three".