12712243 has 6 divisors (see below), whose sum is σ = 13504316. Its totient is φ = 11964192.

The previous prime is 12712241. The next prime is 12712283. The reversal of 12712243 is 34221721.

It is not a de Polignac number, because 12712243 - 2¹ = 12712241 is a prime.

It is a super-2 number, since 2×12712243² = 323202244182098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12712241) 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 5 ways as a sum of consecutive naturals, for example, 21705 + ... + 22282.

Almost surely, 2^12712243 is an apocalyptic number.

12712243 is a deficient number, since it is larger than the sum of its proper divisors (792073).

12712243 is an equidigital number, since it uses as much as digits as its factorization.

12712243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44021 (or 44004 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 12712243 is about 3565.4232567817. The cubic root of 12712243 is about 233.3856030293.

Adding to 12712243 its reverse (34221721), we get a palindrome (46933964).

The spelling of 12712243 in words is "twelve million, seven hundred twelve thousand, two hundred forty-three".