142645 has 8 divisors (see below), whose sum is σ = 175104. Its totient is φ = 111504.

The previous prime is 142619. The next prime is 142657. The reversal of 142645 is 546241.

142645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142645 is a prime.

It is a Duffinian number.

142645 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69 + ... + 538.

It is an arithmetic number, because the mean of its divisors is an integer number (21888).

2¹⁴²⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

142645 is a deficient number, since it is larger than the sum of its proper divisors (32459).

142645 is an equidigital number, since it uses as much as digits as its factorization.

142645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659.

The product of its digits is 960, while the sum is 22.

The square root of 142645 is about 377.6837301235. The cubic root of 142645 is about 52.2499065191.

Adding to 142645 its reverse (546241), we get a palindrome (688886).

It can be divided in two parts, 142 and 645, that added together give a palindrome (787).

The spelling of 142645 in words is "one hundred forty-two thousand, six hundred forty-five".