868242 has 16 divisors (see below), whose sum is σ = 1783872. Its totient is φ = 281520.

The previous prime is 868229. The next prime is 868249. The reversal of 868242 is 242868.

It is a happy number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868249) by changing a digit.

868242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1734 + ... + 2177.

It is an arithmetic number, because the mean of its divisors is an integer number (111492).

2⁸⁶⁸²⁴² is an apocalyptic number.

868242 is an abundant number, since it is smaller than the sum of its proper divisors (915630).

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

868242 is a wasteful number, since it uses less digits than its factorization.

868242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3953.

The product of its digits is 6144, while the sum is 30.

The square root of 868242 is about 931.7950418413. The cubic root of 868242 is about 95.3996826768.

The spelling of 868242 in words is "eight hundred sixty-eight thousand, two hundred forty-two".