12426563 has 4 divisors (see below), whose sum is σ = 12489840. Its totient is φ = 12363288.

The previous prime is 12426559. The next prime is 12426577. The reversal of 12426563 is 36562421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12426563 - 2² = 12426559 is a prime.

It is a super-3 number, since 3×12426563³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12426503) 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, 31343 + ... + 31736.

It is an arithmetic number, because the mean of its divisors is an integer number (3122460).

Almost surely, 2^12426563 is an apocalyptic number.

12426563 is a deficient number, since it is larger than the sum of its proper divisors (63277).

12426563 is an equidigital number, since it uses as much as digits as its factorization.

12426563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63276.

The product of its digits is 8640, while the sum is 29.

The square root of 12426563 is about 3525.1330471345. The cubic root of 12426563 is about 231.6240629234.

Adding to 12426563 its reverse (36562421), we get a palindrome (48988984).

The spelling of 12426563 in words is "twelve million, four hundred twenty-six thousand, five hundred sixty-three".