42844 has 6 divisors (see below), whose sum is σ = 74984. Its totient is φ = 21420.

The previous prime is 42841. The next prime is 42853. The reversal of 42844 is 44824.

It is a plaindrome in base 13.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5352 + ... + 5359.

2⁴²⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

42844 is a deficient number, since it is larger than the sum of its proper divisors (32140).

42844 is a wasteful number, since it uses less digits than its factorization.

42844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10715 (or 10713 counting only the distinct ones).

The product of its digits is 1024, while the sum is 22.

The square root of 42844 is about 206.9879223530. The cubic root of 42844 is about 34.9915625920.

The spelling of 42844 in words is "forty-two thousand, eight hundred forty-four".