842394 has 32 divisors (see below), whose sum is σ = 1990656. Its totient is φ = 232560.

The previous prime is 842393. The next prime is 842399. The reversal of 842394 is 493248.

It is a happy number.

It is a Curzon 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 842394.

It is not an unprimeable number, because it can be changed into a prime (842393) 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 15 ways as a sum of consecutive naturals, for example, 979 + ... + 1625.

It is an arithmetic number, because the mean of its divisors is an integer number (62208).

2⁸⁴²³⁹⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 842394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (995328).

842394 is an abundant number, since it is smaller than the sum of its proper divisors (1148262).

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

842394 is a wasteful number, since it uses less digits than its factorization.

842394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690.

The product of its digits is 6912, while the sum is 30.

The square root of 842394 is about 917.8202438386. The cubic root of 842394 is about 94.4434307722.

The spelling of 842394 in words is "eight hundred forty-two thousand, three hundred ninety-four".