4245304321 has 2 divisors, whose sum is σ = 4245304322. Its totient is φ = 4245304320.

The previous prime is 4245304309. The next prime is 4245304337. The reversal of 4245304321 is 1234035424.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3057537025 + 1187767296 = 55295^2 + 34464^2 .

It is a cyclic number.

It is not a de Polignac number, because 4245304321 - 2⁵ = 4245304289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4245304321.

It is not a weakly prime, because it can be changed into another prime (4245304391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2122652160 + 2122652161.

It is an arithmetic number, because the mean of its divisors is an integer number (2122652161).

Almost surely, 2^4245304321 is an apocalyptic number.

It is an amenable number.

4245304321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4245304321 is an equidigital number, since it uses as much as digits as its factorization.

4245304321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 4245304321 is about 65155.9998848916. Note that the first 3 decimals coincide. The cubic root of 4245304321 is about 1619.2091248342.

Adding to 4245304321 its reverse (1234035424), we get a palindrome (5479339745).

The spelling of 4245304321 in words is "four billion, two hundred forty-five million, three hundred four thousand, three hundred twenty-one".