142844 has 24 divisors (see below), whose sum is σ = 279888. Its totient is φ = 63360.

The previous prime is 142841. The next prime is 142867. The reversal of 142844 is 448241.

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 142844.

It is not an unprimeable number, because it can be changed into a prime (142841) 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 7 ways as a sum of consecutive naturals, for example, 2099 + ... + 2165.

It is an arithmetic number, because the mean of its divisors is an integer number (11662).

2¹⁴²⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

142844 is a deficient number, since it is larger than the sum of its proper divisors (137044).

142844 is a wasteful number, since it uses less digits than its factorization.

142844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 123 counting only the distinct ones).

The product of its digits is 1024, while the sum is 23.

The square root of 142844 is about 377.9470862436. The cubic root of 142844 is about 52.2741926839.

The spelling of 142844 in words is "one hundred forty-two thousand, eight hundred forty-four".