859642 has 8 divisors (see below), whose sum is σ = 1473696. Its totient is φ = 368412.

The previous prime is 859633. The next prime is 859657. The reversal of 859642 is 246958.

It is a happy number.

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

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 859598 and 859607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30688 + ... + 30715.

It is an arithmetic number, because the mean of its divisors is an integer number (184212).

2⁸⁵⁹⁶⁴² is an apocalyptic number.

859642 is a deficient number, since it is larger than the sum of its proper divisors (614054).

859642 is a wasteful number, since it uses less digits than its factorization.

859642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61412.

The product of its digits is 17280, while the sum is 34.

The square root of 859642 is about 927.1688087937. The cubic root of 859642 is about 95.0836566891.

The spelling of 859642 in words is "eight hundred fifty-nine thousand, six hundred forty-two".