12459 has 4 divisors (see below), whose sum is σ = 16616.
Its totient is φ = 8304.
The previous prime is 12457. The next prime is 12473. The reversal of 12459 is 95421.
Adding to 12459 its reverse (95421), we get a triangular number (107880 = T464).
12459 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
It is not a de Polignac number, because 12459 - 21 = 12457 is a prime.
It is a D-number.
It is a Duffinian number.
It is a plaindrome in base 10 and base 14.
It is not an unprimeable number, because it can be changed into a prime (12451) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2074 + ... + 2079.
It is an arithmetic number, because the mean of its divisors is an integer number (4154).
212459 is an apocalyptic number.
12459 is a deficient number, since it is larger than the sum of its proper divisors (4157).
12459 is an equidigital number, since it uses as much as digits as its factorization.
12459 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4156.
The product of its digits is 360, while the sum is 21.
The square root of 12459 is about 111.6198907005.
The cubic root of 12459 is about 23.1825423562.
The spelling of 12459 in words is "twelve thousand, four hundred fifty-nine".