423205673 has 4 divisors (see below), whose sum is σ = 461678928. Its totient is φ = 384732420.

The previous prime is 423205669. The next prime is 423205687. The reversal of 423205673 is 376502324.

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 423205673 - 2² = 423205669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (423205603) 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, 19236611 + ... + 19236632.

It is an arithmetic number, because the mean of its divisors is an integer number (115419732).

Almost surely, 2^423205673 is an apocalyptic number.

It is an amenable number.

423205673 is a deficient number, since it is larger than the sum of its proper divisors (38473255).

423205673 is a wasteful number, since it uses less digits than its factorization.

423205673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38473254.

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 423205673 is about 20571.9632752929. The cubic root of 423205673 is about 750.7877193376.

Adding to 423205673 its reverse (376502324), we get a palindrome (799707997).

The spelling of 423205673 in words is "four hundred twenty-three million, two hundred five thousand, six hundred seventy-three".