43340243 has 4 divisors (see below), whose sum is σ = 43745400. Its totient is φ = 42935088.

The previous prime is 43340207. The next prime is 43340249. The reversal of 43340243 is 34204334.

It is a happy number.

43340243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43340243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43340249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202418 + ... + 202631.

It is an arithmetic number, because the mean of its divisors is an integer number (10936350).

Almost surely, 2^43340243 is an apocalyptic number.

43340243 is a deficient number, since it is larger than the sum of its proper divisors (405157).

43340243 is a wasteful number, since it uses less digits than its factorization.

43340243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405156.

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

The square root of 43340243 is about 6583.3306919826. The cubic root of 43340243 is about 351.2614156867.

Adding to 43340243 its reverse (34204334), we get a palindrome (77544577).

The spelling of 43340243 in words is "forty-three million, three hundred forty thousand, two hundred forty-three".