43043243 has 2 divisors, whose sum is σ = 43043244. Its totient is φ = 43043242.

The previous prime is 43043207. The next prime is 43043249. The reversal of 43043243 is 34234034.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43043243 - 2⁶ = 43043179 is a prime.

It is not a weakly prime, because it can be changed into another prime (43043249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21521621 + 21521622.

It is an arithmetic number, because the mean of its divisors is an integer number (21521622).

Almost surely, 2^43043243 is an apocalyptic number.

43043243 is a deficient number, since it is larger than the sum of its proper divisors (1).

43043243 is an equidigital number, since it uses as much as digits as its factorization.

43043243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 43043243 is about 6560.7349435867. The cubic root of 43043243 is about 350.4572065706.

Adding to 43043243 its reverse (34234034), we get a palindrome (77277277).

The spelling of 43043243 in words is "forty-three million, forty-three thousand, two hundred forty-three".