43420441 has 4 divisors (see below), whose sum is σ = 43557732. Its totient is φ = 43283152.

The previous prime is 43420439. The next prime is 43420451. The reversal of 43420441 is 14402434.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17816841 + 25603600 = 4221^2 + 5060^2 .

It is a cyclic number.

It is not a de Polignac number, because 43420441 - 2¹ = 43420439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43420451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68170 + ... + 68803.

It is an arithmetic number, because the mean of its divisors is an integer number (10889433).

Almost surely, 2^43420441 is an apocalyptic number.

It is an amenable number.

43420441 is a deficient number, since it is larger than the sum of its proper divisors (137291).

43420441 is a wasteful number, since it uses less digits than its factorization.

43420441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137290.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 43420441 is about 6589.4188666376. The cubic root of 43420441 is about 351.4779435071.

Adding to 43420441 its reverse (14402434), we get a palindrome (57822875).

The spelling of 43420441 in words is "forty-three million, four hundred twenty thousand, four hundred forty-one".