12563442 has 24 divisors (see below), whose sum is σ = 28822716. Its totient is φ = 3941376.

The previous prime is 12563437. The next prime is 12563443. The reversal of 12563442 is 24436521.

12563442 is a `hidden beast` number, since 1 + 25 + 634 + 4 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12467961 + 95481 = 3531^2 + 309^2 .

It is not an unprimeable number, because it can be changed into a prime (12563443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20223 + ... + 20834.

Almost surely, 2^12563442 is an apocalyptic number.

12563442 is an abundant number, since it is smaller than the sum of its proper divisors (16259274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12563442 is a wasteful number, since it uses less digits than its factorization.

12563442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41082 (or 41079 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 12563442 is about 3544.4946043124. The cubic root of 12563442 is about 232.4714082080.

Adding to 12563442 its reverse (24436521), we get a palindrome (36999963).

The spelling of 12563442 in words is "twelve million, five hundred sixty-three thousand, four hundred forty-two".