842844 has 12 divisors (see below), whose sum is σ = 1966664. Its totient is φ = 280944.

The previous prime is 842819. The next prime is 842857. The reversal of 842844 is 448248.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

842844 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 35107 + ... + 35130.

2⁸⁴²⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

842844 is an abundant number, since it is smaller than the sum of its proper divisors (1123820).

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

842844 is a wasteful number, since it uses less digits than its factorization.

842844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70244 (or 70242 counting only the distinct ones).

The product of its digits is 8192, while the sum is 30.

The square root of 842844 is about 918.0653571506. The cubic root of 842844 is about 94.4602447485.

The spelling of 842844 in words is "eight hundred forty-two thousand, eight hundred forty-four".