4857242321 has 2 divisors, whose sum is σ = 4857242322. Its totient is φ = 4857242320.

The previous prime is 4857242309. The next prime is 4857242359. The reversal of 4857242321 is 1232427584.

It is a happy number.

It is an a-pointer prime, because the next prime (4857242359) can be obtained adding 4857242321 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4807342225 + 49900096 = 69335^2 + 7064^2 .

It is a cyclic number.

It is not a de Polignac number, because 4857242321 - 2¹⁰ = 4857241297 is a prime.

It is not a weakly prime, because it can be changed into another prime (4857242521) 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, 2428621160 + 2428621161.

It is an arithmetic number, because the mean of its divisors is an integer number (2428621161).

Almost surely, 2^4857242321 is an apocalyptic number.

It is an amenable number.

4857242321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4857242321 is an equidigital number, since it uses as much as digits as its factorization.

4857242321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 38.

The square root of 4857242321 is about 69693.9188236678. The cubic root of 4857242321 is about 1693.5444117037.

The spelling of 4857242321 in words is "four billion, eight hundred fifty-seven million, two hundred forty-two thousand, three hundred twenty-one".