423443242 has 8 divisors (see below), whose sum is σ = 672527556. Its totient is φ = 199267392.

The previous prime is 423443233. The next prime is 423443243. The reversal of 423443242 is 242344324.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 334121841 + 89321401 = 18279^2 + 9451^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 423443242.

It is not an unprimeable number, because it can be changed into a prime (423443243) 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, 6227073 + ... + 6227140.

Almost surely, 2^423443242 is an apocalyptic number.

423443242 is a deficient number, since it is larger than the sum of its proper divisors (249084314).

423443242 is a wasteful number, since it uses less digits than its factorization.

423443242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12454232.

The product of its digits is 18432, while the sum is 28.

The square root of 423443242 is about 20577.7365616338. The cubic root of 423443242 is about 750.9281794293.

Adding to 423443242 its reverse (242344324), we get a palindrome (665787566).

It can be divided in two parts, 42344324 and 2, that multiplied together give a palindrome (84688648).

The spelling of 423443242 in words is "four hundred twenty-three million, four hundred forty-three thousand, two hundred forty-two".