43420443 has 8 divisors (see below), whose sum is σ = 63157056. Its totient is φ = 26315400.

The previous prime is 43420439. The next prime is 43420451. The reversal of 43420443 is 34402434.

It is a happy number.

43420443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 43420443 - 2² = 43420439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43420423) 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 7 ways as a sum of consecutive naturals, for example, 657853 + ... + 657918.

It is an arithmetic number, because the mean of its divisors is an integer number (7894632).

Almost surely, 2^43420443 is an apocalyptic number.

43420443 is a deficient number, since it is larger than the sum of its proper divisors (19736613).

43420443 is a wasteful number, since it uses less digits than its factorization.

43420443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315785.

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 43420443 is about 6589.4190183961. The cubic root of 43420443 is about 351.4779489036.

Adding to 43420443 its reverse (34402434), we get a palindrome (77822877).

Subtracting from 43420443 its reverse (34402434), we obtain a square (9018009 = 3003²).

The spelling of 43420443 in words is "forty-three million, four hundred twenty thousand, four hundred forty-three".