420875875 has 16 divisors (see below), whose sum is σ = 600290496. Its totient is φ = 288600000.

The previous prime is 420875857. The next prime is 420875881. The reversal of 420875875 is 578578024.

It is not a de Polignac number, because 420875875 - 2⁹ = 420875363 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 15 ways as a sum of consecutive naturals, for example, 239626 + ... + 241375.

It is an arithmetic number, because the mean of its divisors is an integer number (37518156).

Almost surely, 2^420875875 is an apocalyptic number.

420875875 is a deficient number, since it is larger than the sum of its proper divisors (179414621).

420875875 is an equidigital number, since it uses as much as digits as its factorization.

420875875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481023 (or 481013 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 46.

The square root of 420875875 is about 20515.2595645290. The cubic root of 420875875 is about 749.4074579077.

The spelling of 420875875 in words is "four hundred twenty million, eight hundred seventy-five thousand, eight hundred seventy-five".