43242541 has 4 divisors (see below), whose sum is σ = 44058492. Its totient is φ = 42426592.

The previous prime is 43242527. The next prime is 43242569. The reversal of 43242541 is 14524234.

It is a happy number.

43242541 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, and also an emirpimes, since its reverse is a distinct semiprime: 14524234 = 2 ⋅7262117.

It can be written as a sum of positive squares in 2 ways, for example, as 38180041 + 5062500 = 6179^2 + 2250^2 .

It is a cyclic number.

It is not a de Polignac number, because 43242541 - 2¹⁵ = 43209773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43242571) 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, 407896 + ... + 408001.

It is an arithmetic number, because the mean of its divisors is an integer number (11014623).

Almost surely, 2^43242541 is an apocalyptic number.

It is an amenable number.

43242541 is a deficient number, since it is larger than the sum of its proper divisors (815951).

43242541 is an equidigital number, since it uses as much as digits as its factorization.

43242541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815950.

The product of its digits is 3840, while the sum is 25.

The square root of 43242541 is about 6575.9060972614. The cubic root of 43242541 is about 350.9972673169.

Adding to 43242541 its reverse (14524234), we get a palindrome (57766775).

The spelling of 43242541 in words is "forty-three million, two hundred forty-two thousand, five hundred forty-one".