12818129 has 4 divisors (see below), whose sum is σ = 12825600. Its totient is φ = 12810660.

The previous prime is 12818123. The next prime is 12818161. The reversal of 12818129 is 92181821.

12818129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 92181821 = 1033 ⋅89237.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12818129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12818095 and 12818104.

It is not an unprimeable number, because it can be changed into a prime (12818123) 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, 272 + ... + 5070.

It is an arithmetic number, because the mean of its divisors is an integer number (3206400).

Almost surely, 2^12818129 is an apocalyptic number.

It is an amenable number.

12818129 is a deficient number, since it is larger than the sum of its proper divisors (7471).

12818129 is an equidigital number, since it uses as much as digits as its factorization.

12818129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7470.

The product of its digits is 2304, while the sum is 32.

The square root of 12818129 is about 3580.2414723032. The cubic root of 12818129 is about 234.0318034549.

It can be divided in two parts, 1281812 and 9, that added together give a palindrome (1281821).

The spelling of 12818129 in words is "twelve million, eight hundred eighteen thousand, one hundred twenty-nine".