1224030305 has 4 divisors (see below), whose sum is σ = 1468836372. Its totient is φ = 979224240.

The previous prime is 1224030287. The next prime is 1224030329. The reversal of 1224030305 is 5030304221.

It is a happy number.

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 941016976 + 283013329 = 30676^2 + 16823^2 .

It is not a de Polignac number, because 1224030305 - 2¹⁶ = 1223964769 is a prime.

It is a Duffinian number.

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, 122403026 + ... + 122403035.

It is an arithmetic number, because the mean of its divisors is an integer number (367209093).

Almost surely, 2^1224030305 is an apocalyptic number.

It is an amenable number.

1224030305 is a deficient number, since it is larger than the sum of its proper divisors (244806067).

1224030305 is an equidigital number, since it uses as much as digits as its factorization.

1224030305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244806066.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 1224030305 is about 34986.1444717763. The cubic root of 1224030305 is about 1069.7050763735.

Adding to 1224030305 its reverse (5030304221), we get a palindrome (6254334526).

The spelling of 1224030305 in words is "one billion, two hundred twenty-four million, thirty thousand, three hundred five".