12442237 has 2 divisors, whose sum is σ = 12442238. Its totient is φ = 12442236.

The previous prime is 12442223. The next prime is 12442259. The reversal of 12442237 is 73224421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8173881 + 4268356 = 2859^2 + 2066^2 .

It is an emirp because it is prime and its reverse (73224421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12442237 - 2¹⁹ = 11917949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12442217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6221118 + 6221119.

It is an arithmetic number, because the mean of its divisors is an integer number (6221119).

Almost surely, 2^12442237 is an apocalyptic number.

It is an amenable number.

12442237 is a deficient number, since it is larger than the sum of its proper divisors (1).

12442237 is an equidigital number, since it uses as much as digits as its factorization.

12442237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 25.

The square root of 12442237 is about 3527.3555250357. The cubic root of 12442237 is about 231.7214068208.

Adding to 12442237 its reverse (73224421), we get a palindrome (85666658).

It can be divided in two parts, 1244 and 2237, that added together give a square (3481 = 59²).

The spelling of 12442237 in words is "twelve million, four hundred forty-two thousand, two hundred thirty-seven".