123286 has 4 divisors (see below), whose sum is σ = 184932. Its totient is φ = 61642.

The previous prime is 123269. The next prime is 123289. The reversal of 123286 is 682321.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) 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 not an unprimeable number, because it can be changed into a prime (123289) by changing a digit.

123286 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 as a sum of consecutive naturals, namely, 30820 + ... + 30823.

It is an arithmetic number, because the mean of its divisors is an integer number (46233).

2¹²³²⁸⁶ is an apocalyptic number.

123286 is a deficient number, since it is larger than the sum of its proper divisors (61646).

123286 is an equidigital number, since it uses as much as digits as its factorization.

123286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61645.

The product of its digits is 576, while the sum is 22.

The square root of 123286 is about 351.1210617437. The cubic root of 123286 is about 49.7704140864.

The spelling of 123286 in words is "one hundred twenty-three thousand, two hundred eighty-six".