43424121 has 16 divisors (see below), whose sum is σ = 62644736. Its totient is φ = 26597376.

The previous prime is 43424111. The next prime is 43424153. The reversal of 43424121 is 12142434.

It is not a de Polignac number, because 43424121 - 2⁵ = 43424089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43424111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6201 + ... + 11193.

It is an arithmetic number, because the mean of its divisors is an integer number (3915296).

Almost surely, 2^43424121 is an apocalyptic number.

It is an amenable number.

43424121 is a deficient number, since it is larger than the sum of its proper divisors (19220615).

43424121 is a wasteful number, since it uses less digits than its factorization.

43424121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5232.

The product of its digits is 768, while the sum is 21.

The square root of 43424121 is about 6589.6980962712. The cubic root of 43424121 is about 351.4878727958.

Adding to 43424121 its reverse (12142434), we get a palindrome (55566555).

The spelling of 43424121 in words is "forty-three million, four hundred twenty-four thousand, one hundred twenty-one".