43420343 has 8 divisors (see below), whose sum is σ = 45657216. Its totient is φ = 41212600.

The previous prime is 43420331. The next prime is 43420379. The reversal of 43420343 is 34302434.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43420343 - 2¹⁰ = 43419319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43420393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4193 + ... + 10218.

It is an arithmetic number, because the mean of its divisors is an integer number (5707152).

Almost surely, 2^43420343 is an apocalyptic number.

43420343 is a deficient number, since it is larger than the sum of its proper divisors (2236873).

43420343 is a wasteful number, since it uses less digits than its factorization.

43420343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14565.

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

The square root of 43420343 is about 6589.4114304693. The cubic root of 43420343 is about 351.4776790781.

Adding to 43420343 its reverse (34302434), we get a palindrome (77722777).

The spelling of 43420343 in words is "forty-three million, four hundred twenty thousand, three hundred forty-three".