423120243 has 24 divisors (see below), whose sum is σ = 706753488. Its totient is φ = 223183296.

The previous prime is 423120221. The next prime is 423120281. The reversal of 423120243 is 342021324.

It is not a de Polignac number, because 423120243 - 2⁹ = 423119731 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (423120283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108796 + ... + 112617.

It is an arithmetic number, because the mean of its divisors is an integer number (29448062).

Almost surely, 2^423120243 is an apocalyptic number.

423120243 is a deficient number, since it is larger than the sum of its proper divisors (283633245).

423120243 is a wasteful number, since it uses less digits than its factorization.

423120243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221443 (or 221436 counting only the distinct ones).

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

The square root of 423120243 is about 20569.8868008553. The cubic root of 423120243 is about 750.7371969279.

Adding to 423120243 its reverse (342021324), we get a palindrome (765141567).

The spelling of 423120243 in words is "four hundred twenty-three million, one hundred twenty thousand, two hundred forty-three".