420163424 has 24 divisors (see below), whose sum is σ = 829067400. Its totient is φ = 209606656.

The previous prime is 420163423. The next prime is 420163439. The reversal of 420163424 is 424361024.

It is a junction number, because it is equal to n+sod(n) for n = 420163393 and 420163402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420163421) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 254 + ... + 28989.

It is an arithmetic number, because the mean of its divisors is an integer number (34544475).

Almost surely, 2^420163424 is an apocalyptic number.

It is an amenable number.

420163424 is a deficient number, since it is larger than the sum of its proper divisors (408903976).

420163424 is a wasteful number, since it uses less digits than its factorization.

420163424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29702 (or 29694 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 420163424 is about 20497.8882814791. Note that the first 3 decimals coincide. The cubic root of 420163424 is about 748.9843579900.

The spelling of 420163424 in words is "four hundred twenty million, one hundred sixty-three thousand, four hundred twenty-four".