142544 has 20 divisors (see below), whose sum is σ = 282720. Its totient is φ = 69600.

The previous prime is 142543. The next prime is 142547. The reversal of 142544 is 445241.

It is an Ulam 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 142544.

It is not an unprimeable number, because it can be changed into a prime (142543) 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 in 3 ways as a sum of consecutive naturals, for example, 869 + ... + 1019.

It is an arithmetic number, because the mean of its divisors is an integer number (14136).

2¹⁴²⁵⁴⁴ is an apocalyptic number.

It is an amenable number.

142544 is a deficient number, since it is larger than the sum of its proper divisors (140176).

142544 is a wasteful number, since it uses less digits than its factorization.

142544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 212 counting only the distinct ones).

The product of its digits is 640, while the sum is 20.

The square root of 142544 is about 377.5499966892. The cubic root of 142544 is about 52.2375717333.

Adding to 142544 its reverse (445241), we get a palindrome (587785).

It can be divided in two parts, 142 and 544, that added together give a palindrome (686).

The spelling of 142544 in words is "one hundred forty-two thousand, five hundred forty-four".