43240271 has 2 divisors, whose sum is σ = 43240272. Its totient is φ = 43240270.

The previous prime is 43240237. The next prime is 43240273. The reversal of 43240271 is 17204234.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43240271 - 2¹⁰ = 43239247 is a prime.

Together with 43240273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43240273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21620135 + 21620136.

It is an arithmetic number, because the mean of its divisors is an integer number (21620136).

Almost surely, 2^43240271 is an apocalyptic number.

43240271 is a deficient number, since it is larger than the sum of its proper divisors (1).

43240271 is an equidigital number, since it uses as much as digits as its factorization.

43240271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 43240271 is about 6575.7334952080. The cubic root of 43240271 is about 350.9911253888.

The spelling of 43240271 in words is "forty-three million, two hundred forty thousand, two hundred seventy-one".