423443001 has 4 divisors (see below), whose sum is σ = 564590672. Its totient is φ = 282295332.

The previous prime is 423442993. The next prime is 423443003. The reversal of 423443001 is 100344324.

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 not a de Polignac number, because 423443001 - 2³ = 423442993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423443003) 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, 70573831 + ... + 70573836.

It is an arithmetic number, because the mean of its divisors is an integer number (141147668).

Almost surely, 2^423443001 is an apocalyptic number.

It is an amenable number.

423443001 is a deficient number, since it is larger than the sum of its proper divisors (141147671).

423443001 is a wasteful number, since it uses less digits than its factorization.

423443001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141147670.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 423443001 is about 20577.7307057897. The cubic root of 423443001 is about 750.9280369673.

Adding to 423443001 its reverse (100344324), we get a palindrome (523787325).

The spelling of 423443001 in words is "four hundred twenty-three million, four hundred forty-three thousand, one".