4317542821 has 2 divisors, whose sum is σ = 4317542822. Its totient is φ = 4317542820.

The previous prime is 4317542809. The next prime is 4317542857. The reversal of 4317542821 is 1282457134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4265918596 + 51624225 = 65314^2 + 7185^2 .

It is a cyclic number.

It is not a de Polignac number, because 4317542821 - 2⁷ = 4317542693 is a prime.

It is a super-2 number, since 2×4317542821² = 37282352022337276082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4317542521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2158771410 + 2158771411.

It is an arithmetic number, because the mean of its divisors is an integer number (2158771411).

Almost surely, 2^4317542821 is an apocalyptic number.

It is an amenable number.

4317542821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4317542821 is an equidigital number, since it uses as much as digits as its factorization.

4317542821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 37.

The square root of 4317542821 is about 65708.0118478713. The cubic root of 4317542821 is about 1628.3417238948.

Adding to 4317542821 its reverse (1282457134), we get a palindrome (5599999955).

The spelling of 4317542821 in words is "four billion, three hundred seventeen million, five hundred forty-two thousand, eight hundred twenty-one".