868842 has 48 divisors (see below), whose sum is σ = 2096640. Its totient is φ = 258336.

The previous prime is 868841. The next prime is 868849. The reversal of 868842 is 248868.

868842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 868797 and 868806.

It is not an unprimeable number, because it can be changed into a prime (868841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10959 + ... + 11037.

It is an arithmetic number, because the mean of its divisors is an integer number (43680).

2⁸⁶⁸⁸⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 868842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1048320).

868842 is an abundant number, since it is smaller than the sum of its proper divisors (1227798).

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

868842 is a wasteful number, since it uses less digits than its factorization.

868842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 144 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 868842 is about 932.1169454527. The cubic root of 868842 is about 95.4216529836.

The spelling of 868842 in words is "eight hundred sixty-eight thousand, eight hundred forty-two".