423144545 has 8 divisors (see below), whose sum is σ = 508688424. Its totient is φ = 337905664.

The previous prime is 423144529. The next prime is 423144551. The reversal of 423144545 is 545441324.

It can be written as a sum of positive squares in 4 ways, for example, as 8248384 + 414896161 = 2872^2 + 20369^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 423144545 - 2⁴ = 423144529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73184 + ... + 78753.

It is an arithmetic number, because the mean of its divisors is an integer number (63586053).

Almost surely, 2^423144545 is an apocalyptic number.

It is an amenable number.

423144545 is a deficient number, since it is larger than the sum of its proper divisors (85543879).

423144545 is a wasteful number, since it uses less digits than its factorization.

423144545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152499.

The product of its digits is 38400, while the sum is 32.

The square root of 423144545 is about 20570.4775102573. The cubic root of 423144545 is about 750.7515695690.

Adding to 423144545 its reverse (545441324), we get a palindrome (968585869).

The spelling of 423144545 in words is "four hundred twenty-three million, one hundred forty-four thousand, five hundred forty-five".