1224242563 has 4 divisors (see below), whose sum is σ = 1241485488. Its totient is φ = 1206999640.

The previous prime is 1224242543. The next prime is 1224242567. The reversal of 1224242563 is 3652424221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3652424221 = 7561 ⋅483061.

It is a cyclic number.

It is not a de Polignac number, because 1224242563 - 2⁵ = 1224242531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224242567) 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, 8621356 + ... + 8621497.

It is an arithmetic number, because the mean of its divisors is an integer number (310371372).

Almost surely, 2^1224242563 is an apocalyptic number.

1224242563 is a deficient number, since it is larger than the sum of its proper divisors (17242925).

1224242563 is an equidigital number, since it uses as much as digits as its factorization.

1224242563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17242924.

The product of its digits is 23040, while the sum is 31.

The square root of 1224242563 is about 34989.1777982850. The cubic root of 1224242563 is about 1069.7669049998.

Adding to 1224242563 its reverse (3652424221), we get a palindrome (4876666784).

The spelling of 1224242563 in words is "one billion, two hundred twenty-four million, two hundred forty-two thousand, five hundred sixty-three".