1224502145 has 4 divisors (see below), whose sum is σ = 1469402580. Its totient is φ = 979601712.

The previous prime is 1224502127. The next prime is 1224502157. The reversal of 1224502145 is 5412054221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 404653456 + 819848689 = 20116^2 + 28633^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224502145 - 2²⁴ = 1207724929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122450210 + ... + 122450219.

It is an arithmetic number, because the mean of its divisors is an integer number (367350645).

Almost surely, 2^1224502145 is an apocalyptic number.

It is an amenable number.

1224502145 is a deficient number, since it is larger than the sum of its proper divisors (244900435).

1224502145 is an equidigital number, since it uses as much as digits as its factorization.

1224502145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244900434.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1224502145 is about 34992.8870629447. The cubic root of 1224502145 is about 1069.8425089192.

Adding to 1224502145 its reverse (5412054221), we get a palindrome (6636556366).

The spelling of 1224502145 in words is "one billion, two hundred twenty-four million, five hundred two thousand, one hundred forty-five".