12842289 has 12 divisors (see below), whose sum is σ = 18589636. Its totient is φ = 8543232.

The previous prime is 12842287. The next prime is 12842311. The reversal of 12842289 is 98224821.

It can be written as a sum of positive squares in 2 ways, for example, as 11675889 + 1166400 = 3417^2 + 1080^2 .

It is not a de Polignac number, because 12842289 - 2¹ = 12842287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12842287) 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 11 ways as a sum of consecutive naturals, for example, 3957 + ... + 6429.

Almost surely, 2^12842289 is an apocalyptic number.

It is an amenable number.

12842289 is a deficient number, since it is larger than the sum of its proper divisors (5747347).

12842289 is a wasteful number, since it uses less digits than its factorization.

12842289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056 (or 3053 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 12842289 is about 3583.6139580038. The cubic root of 12842289 is about 234.1787479291.

It can be divided in two parts, 12842 and 289, that added together give a palindrome (13131).

The spelling of 12842289 in words is "twelve million, eight hundred forty-two thousand, two hundred eighty-nine".