863842 has 8 divisors (see below), whose sum is σ = 1480896. Its totient is φ = 370212.

The previous prime is 863833. The next prime is 863843. The reversal of 863842 is 248368.

It is a happy number.

863842 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.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (863843) by changing a digit.

863842 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, 30838 + ... + 30865.

It is an arithmetic number, because the mean of its divisors is an integer number (185112).

2⁸⁶³⁸⁴² is an apocalyptic number.

863842 is a deficient number, since it is larger than the sum of its proper divisors (617054).

863842 is a wasteful number, since it uses less digits than its factorization.

863842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61712.

The product of its digits is 9216, while the sum is 31.

The square root of 863842 is about 929.4310087360. The cubic root of 863842 is about 95.2382569918.

The spelling of 863842 in words is "eight hundred sixty-three thousand, eight hundred forty-two".