123306 has 8 divisors (see below), whose sum is σ = 246624. Its totient is φ = 41100.
The previous prime is 123289. The next prime is 123307. The reversal of 123306 is 603321.
It is a sphenic number, since it is the product of 3 distinct primes.
123306 is an admirable number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (123307) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10270 + ... + 10281.
It is an arithmetic number, because the mean of its divisors is an integer number (30828).
2123306 is an apocalyptic number.
123306 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
123306 is a wasteful number, since it uses less digits than its factorization.
123306 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 20556.
The product of its (nonzero) digits is 108, while the sum is 15.
The square root of 123306 is about 351.1495407942. The cubic root of 123306 is about 49.7731052664.
Adding to 123306 its sum of digits (15), we get a palindrome (123321).
Adding to 123306 its reverse (603321), we get a palindrome (726627).
The spelling of 123306 in words is "one hundred twenty-three thousand, three hundred six".
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