844542 has 12 divisors (see below), whose sum is σ = 1829880. Its totient is φ = 281508.

The previous prime is 844523. The next prime is 844549. The reversal of 844542 is 245448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23442 + ... + 23477.

It is an arithmetic number, because the mean of its divisors is an integer number (152490).

2⁸⁴⁴⁵⁴² is an apocalyptic number.

844542 is an abundant number, since it is smaller than the sum of its proper divisors (985338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

844542 is a wasteful number, since it uses less digits than its factorization.

844542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46927 (or 46924 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 844542 is about 918.9896626187. The cubic root of 844542 is about 94.5236356433.

The spelling of 844542 in words is "eight hundred forty-four thousand, five hundred forty-two".