423940573 has 4 divisors (see below), whose sum is σ = 484503520. Its totient is φ = 363377628.

The previous prime is 423940571. The next prime is 423940579. The reversal of 423940573 is 375049324.

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 423940573 - 2¹ = 423940571 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423940571) 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, 30281463 + ... + 30281476.

It is an arithmetic number, because the mean of its divisors is an integer number (121125880).

Almost surely, 2^423940573 is an apocalyptic number.

It is an amenable number.

423940573 is a deficient number, since it is larger than the sum of its proper divisors (60562947).

423940573 is an equidigital number, since it uses as much as digits as its factorization.

423940573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60562946.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 423940573 is about 20589.8172162844. The cubic root of 423940573 is about 751.2220509663. Note that the first 3 decimals are identical.

Adding to 423940573 its reverse (375049324), we get a palindrome (798989897).

The spelling of 423940573 in words is "four hundred twenty-three million, nine hundred forty thousand, five hundred seventy-three".