4197571243 has 2 divisors, whose sum is σ = 4197571244. Its totient is φ = 4197571242.

The previous prime is 4197571207. The next prime is 4197571247. The reversal of 4197571243 is 3421757914.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4197571243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4197571243.

It is not a weakly prime, because it can be changed into another prime (4197571247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2098785621 + 2098785622.

It is an arithmetic number, because the mean of its divisors is an integer number (2098785622).

Almost surely, 2^4197571243 is an apocalyptic number.

4197571243 is a deficient number, since it is larger than the sum of its proper divisors (1).

4197571243 is an equidigital number, since it uses as much as digits as its factorization.

4197571243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 43.

The square root of 4197571243 is about 64788.6660072578. Note that the first 3 decimals coincide. The cubic root of 4197571243 is about 1613.1175839841.

The spelling of 4197571243 in words is "four billion, one hundred ninety-seven million, five hundred seventy-one thousand, two hundred forty-three".