43423001 has 4 divisors (see below), whose sum is σ = 43564752. Its totient is φ = 43281252.

The previous prime is 43422989. The next prime is 43423007. The reversal of 43423001 is 10032434.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43423001 - 2¹⁰ = 43421977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43423007) 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, 70415 + ... + 71028.

It is an arithmetic number, because the mean of its divisors is an integer number (10891188).

Almost surely, 2^43423001 is an apocalyptic number.

It is an amenable number.

43423001 is a deficient number, since it is larger than the sum of its proper divisors (141751).

43423001 is a wasteful number, since it uses less digits than its factorization.

43423001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141750.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 43423001 is about 6589.6131145918. The cubic root of 43423001 is about 351.4848508978.

Adding to 43423001 its reverse (10032434), we get a palindrome (53455435).

The spelling of 43423001 in words is "forty-three million, four hundred twenty-three thousand, one".