43424001 has 12 divisors (see below), whose sum is σ = 66413412. Its totient is φ = 27246336.

The previous prime is 43423999. The next prime is 43424033. The reversal of 43424001 is 10042434.

It can be written as a sum of positive squares in 2 ways, for example, as 12787776 + 30636225 = 3576^2 + 5535^2 .

It is not a de Polignac number, because 43424001 - 2¹ = 43423999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43424071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141756 + ... + 142061.

It is an arithmetic number, because the mean of its divisors is an integer number (5534451).

Almost surely, 2^43424001 is an apocalyptic number.

It is an amenable number.

43424001 is a deficient number, since it is larger than the sum of its proper divisors (22989411).

43424001 is a wasteful number, since it uses less digits than its factorization.

43424001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283840 (or 283837 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 43424001 is about 6589.6889911437. The cubic root of 43424001 is about 351.4875490235.

Adding to 43424001 its reverse (10042434), we get a palindrome (53466435).

The spelling of 43424001 in words is "forty-three million, four hundred twenty-four thousand, one".