423205215 has 16 divisors (see below), whose sum is σ = 678327936. Its totient is φ = 225309600.

The previous prime is 423205201. The next prime is 423205217. The reversal of 423205215 is 512502324.

It is not a de Polignac number, because 423205215 - 2⁴ = 423205199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423205217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16141 + ... + 33270.

It is an arithmetic number, because the mean of its divisors is an integer number (42395496).

Almost surely, 2^423205215 is an apocalyptic number.

423205215 is a deficient number, since it is larger than the sum of its proper divisors (255122721).

423205215 is a wasteful number, since it uses less digits than its factorization.

423205215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49990.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 423205215 is about 20571.9521436348. The cubic root of 423205215 is about 750.7874484994.

Adding to 423205215 its reverse (512502324), we get a palindrome (935707539).

The spelling of 423205215 in words is "four hundred twenty-three million, two hundred five thousand, two hundred fifteen".