420144224 has 12 divisors (see below), whose sum is σ = 827159004. Its totient is φ = 210072096.

The previous prime is 420144223. The next prime is 420144229. The reversal of 420144224 is 422441024.

It is a self number, because there is not a number n which added to its sum of digits gives 420144224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420144223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6564722 + ... + 6564785.

It is an arithmetic number, because the mean of its divisors is an integer number (68929917).

Almost surely, 2^420144224 is an apocalyptic number.

It is an amenable number.

420144224 is a deficient number, since it is larger than the sum of its proper divisors (407014780).

420144224 is a wasteful number, since it uses less digits than its factorization.

420144224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13129517 (or 13129509 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 420144224 is about 20497.4199352016. The cubic root of 420144224 is about 748.9729491604.

Adding to 420144224 its reverse (422441024), we get a palindrome (842585248).

The spelling of 420144224 in words is "four hundred twenty million, one hundred forty-four thousand, two hundred twenty-four".