12642263 has 2 divisors, whose sum is σ = 12642264. Its totient is φ = 12642262.

The previous prime is 12642211. The next prime is 12642281. The reversal of 12642263 is 36224621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12642263 - 2⁶ = 12642199 is a prime.

It is a super-2 number, since 2×12642263² = 319653627522338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12642283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6321131 + 6321132.

It is an arithmetic number, because the mean of its divisors is an integer number (6321132).

Almost surely, 2^12642263 is an apocalyptic number.

12642263 is a deficient number, since it is larger than the sum of its proper divisors (1).

12642263 is an equidigital number, since it uses as much as digits as its factorization.

12642263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 26.

The square root of 12642263 is about 3555.5960119226. The cubic root of 12642263 is about 232.9565576876.

Adding to 12642263 its reverse (36224621), we get a palindrome (48866884).

The spelling of 12642263 in words is "twelve million, six hundred forty-two thousand, two hundred sixty-three".