423043345 has 4 divisors (see below), whose sum is σ = 507652020. Its totient is φ = 338434672.

The previous prime is 423043343. The next prime is 423043367. The reversal of 423043345 is 543340324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 166306816 + 256736529 = 12896^2 + 16023^2 .

It is a cyclic number.

It is not a de Polignac number, because 423043345 - 2¹ = 423043343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423043343) 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, 42304330 + ... + 42304339.

It is an arithmetic number, because the mean of its divisors is an integer number (126913005).

Almost surely, 2^423043345 is an apocalyptic number.

It is an amenable number.

423043345 is a deficient number, since it is larger than the sum of its proper divisors (84608675).

423043345 is an equidigital number, since it uses as much as digits as its factorization.

423043345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84608674.

The product of its (nonzero) digits is 17280, while the sum is 28.

The square root of 423043345 is about 20568.0175272193. The cubic root of 423043345 is about 750.6917144380.

Adding to 423043345 its reverse (543340324), we get a palindrome (966383669).

The spelling of 423043345 in words is "four hundred twenty-three million, forty-three thousand, three hundred forty-five".