104285 has 4 divisors (see below), whose sum is σ = 125148. Its totient is φ = 83424.

The previous prime is 104281. The next prime is 104287. The reversal of 104285 is 582401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 582401 = 107 ⋅5443.

It can be written as a sum of positive squares in 2 ways, for example, as 76729 + 27556 = 277^2 + 166^2 .

It is a cyclic number.

It is not a de Polignac number, because 104285 - 2² = 104281 is a prime.

It is a super-2 number, since 2×104285² = 21750722450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 104285.

It is not an unprimeable number, because it can be changed into a prime (104281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10424 + ... + 10433.

It is an arithmetic number, because the mean of its divisors is an integer number (31287).

2¹⁰⁴²⁸⁵ is an apocalyptic number.

It is an amenable number.

104285 is a deficient number, since it is larger than the sum of its proper divisors (20863).

104285 is an equidigital number, since it uses as much as digits as its factorization.

104285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20862.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 104285 is about 322.9318813620. The cubic root of 104285 is about 47.0696116504.

Adding to 104285 its reverse (582401), we get a palindrome (686686).

The spelling of 104285 in words is "one hundred four thousand, two hundred eighty-five".