12124165 has 4 divisors (see below), whose sum is σ = 14549004. Its totient is φ = 9699328.

The previous prime is 12124163. The next prime is 12124169. The reversal of 12124165 is 56142121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56142121 = 7 ⋅8020303.

It can be written as a sum of positive squares in 2 ways, for example, as 8862529 + 3261636 = 2977^2 + 1806^2 .

It is a cyclic number.

It is not a de Polignac number, because 12124165 - 2¹ = 12124163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12124163) 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, 1212412 + ... + 1212421.

It is an arithmetic number, because the mean of its divisors is an integer number (3637251).

Almost surely, 2^12124165 is an apocalyptic number.

It is an amenable number.

12124165 is a deficient number, since it is larger than the sum of its proper divisors (2424839).

12124165 is an equidigital number, since it uses as much as digits as its factorization.

12124165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424838.

The product of its digits is 480, while the sum is 22.

The square root of 12124165 is about 3481.9771682192. The cubic root of 12124165 is about 229.7297708463.

Adding to 12124165 its reverse (56142121), we get a palindrome (68266286).

The spelling of 12124165 in words is "twelve million, one hundred twenty-four thousand, one hundred sixty-five".