12512243 has 4 divisors (see below), whose sum is σ = 12652920. Its totient is φ = 12371568.

The previous prime is 12512239. The next prime is 12512263. The reversal of 12512243 is 34221521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34221521 = 293 ⋅116797.

It is a cyclic number.

It is not a de Polignac number, because 12512243 - 2² = 12512239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12512233) 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, 70205 + ... + 70382.

It is an arithmetic number, because the mean of its divisors is an integer number (3163230).

Almost surely, 2^12512243 is an apocalyptic number.

12512243 is a deficient number, since it is larger than the sum of its proper divisors (140677).

12512243 is an equidigital number, since it uses as much as digits as its factorization.

12512243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140676.

The product of its digits is 480, while the sum is 20.

The square root of 12512243 is about 3537.2649038487. The cubic root of 12512243 is about 232.1551862531.

Adding to 12512243 its reverse (34221521), we get a palindrome (46733764).

It can be divided in two parts, 125 and 12243, that multiplied together give a triangular number (1530375 = T₁₇₄₉).

The spelling of 12512243 in words is "twelve million, five hundred twelve thousand, two hundred forty-three".