43240001 has 6 divisors (see below), whose sum is σ = 50299650. Its totient is φ = 37062816.

The previous prime is 43239971. The next prime is 43240003. The reversal of 43240001 is 10004234.

It can be written as a sum of positive squares in only one way, i.e., 23668225 + 19571776 = 4865^2 + 4424^2 .

It is not a de Polignac number, because 43240001 - 2¹⁴ = 43223617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43240003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 441176 + ... + 441273.

It is an arithmetic number, because the mean of its divisors is an integer number (8383275).

Almost surely, 2^43240001 is an apocalyptic number.

It is an amenable number.

43240001 is a deficient number, since it is larger than the sum of its proper divisors (7059649).

43240001 is an equidigital number, since it uses as much as digits as its factorization.

43240001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882463 (or 882456 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 43240001 is about 6575.7129651468. The cubic root of 43240001 is about 350.9903948368.

Adding to 43240001 its reverse (10004234), we get a palindrome (53244235).

The spelling of 43240001 in words is "forty-three million, two hundred forty thousand, one".