4272421243 has 2 divisors, whose sum is σ = 4272421244. Its totient is φ = 4272421242.

The previous prime is 4272421211. The next prime is 4272421247. The reversal of 4272421243 is 3421242724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4272421243 - 2⁵ = 4272421211 is a prime.

It is not a weakly prime, because it can be changed into another prime (4272421247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2136210621 + 2136210622.

It is an arithmetic number, because the mean of its divisors is an integer number (2136210622).

Almost surely, 2^4272421243 is an apocalyptic number.

4272421243 is a deficient number, since it is larger than the sum of its proper divisors (1).

4272421243 is an equidigital number, since it uses as much as digits as its factorization.

4272421243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 31.

The square root of 4272421243 is about 65363.7609306564. The cubic root of 4272421243 is about 1622.6493815705.

Adding to 4272421243 its reverse (3421242724), we get a palindrome (7693663967).

The spelling of 4272421243 in words is "four billion, two hundred seventy-two million, four hundred twenty-one thousand, two hundred forty-three".