420563530 has 16 divisors (see below), whose sum is σ = 767677824. Its totient is φ = 165855760.

The previous prime is 420563503. The next prime is 420563617. The reversal of 420563530 is 35365024.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 295462 + ... + 296881.

It is an arithmetic number, because the mean of its divisors is an integer number (47979864).

Almost surely, 2^420563530 is an apocalyptic number.

420563530 is a deficient number, since it is larger than the sum of its proper divisors (347114294).

420563530 is a wasteful number, since it uses less digits than its factorization.

420563530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592421.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 420563530 is about 20507.6456474165. The cubic root of 420563530 is about 749.2220258800. Note that the first 3 decimals are identical.

The spelling of 420563530 in words is "four hundred twenty million, five hundred sixty-three thousand, five hundred thirty".