12123329 has 8 divisors (see below), whose sum is σ = 13013640. Its totient is φ = 11252736.

The previous prime is 12123317. The next prime is 12123341. The reversal of 12123329 is 92332121.

It is an interprime number because it is at equal distance from previous prime (12123317) and next prime (12123341).

It can be written as a sum of positive squares in 4 ways, for example, as 2729104 + 9394225 = 1652^2 + 3065^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12123329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12123359) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3644 + ... + 6125.

It is an arithmetic number, because the mean of its divisors is an integer number (1626705).

Almost surely, 2^12123329 is an apocalyptic number.

It is an amenable number.

12123329 is a deficient number, since it is larger than the sum of its proper divisors (890311).

12123329 is an equidigital number, since it uses as much as digits as its factorization.

12123329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9859.

The product of its digits is 648, while the sum is 23.

The square root of 12123329 is about 3481.8571194120. The cubic root of 12123329 is about 229.7244905239.

The spelling of 12123329 in words is "twelve million, one hundred twenty-three thousand, three hundred twenty-nine".