868542 has 8 divisors (see below), whose sum is σ = 1737096. Its totient is φ = 289512.

The previous prime is 868537. The next prime is 868559. The reversal of 868542 is 245868.

868542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

868542 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

868542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72373 + ... + 72384.

It is an arithmetic number, because the mean of its divisors is an integer number (217137).

2⁸⁶⁸⁵⁴² is an apocalyptic number.

868542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

868542 is a wasteful number, since it uses less digits than its factorization.

868542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144762.

The product of its digits is 15360, while the sum is 33.

The square root of 868542 is about 931.9560075454. The cubic root of 868542 is about 95.4106690950.

The spelling of 868542 in words is "eight hundred sixty-eight thousand, five hundred forty-two".