12226442 has 8 divisors (see below), whose sum is σ = 18419076. Its totient is φ = 6086752.

The previous prime is 12226433. The next prime is 12226453. The reversal of 12226442 is 24462221.

It can be written as a sum of positive squares in 2 ways, for example, as 10686361 + 1540081 = 3269^2 + 1241^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12653 + ... + 13584.

Almost surely, 2^12226442 is an apocalyptic number.

12226442 is a deficient number, since it is larger than the sum of its proper divisors (6192634).

12226442 is a wasteful number, since it uses less digits than its factorization.

12226442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26472.

The product of its digits is 1536, while the sum is 23.

The square root of 12226442 is about 3496.6329518553. The cubic root of 12226442 is about 230.3739474505.

Adding to 12226442 its reverse (24462221), we get a palindrome (36688663).

The spelling of 12226442 in words is "twelve million, two hundred twenty-six thousand, four hundred forty-two".