420870573 has 20 divisors (see below), whose sum is σ = 629977788. Its totient is φ = 280013760.

The previous prime is 420870559. The next prime is 420870613. The reversal of 420870573 is 375078024.

420870573 is a `hidden beast` number, since 4 + 2 + 0 + 87 + 0 + 573 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 83119689 + 337750884 = 9117^2 + 18378^2 .

It is not a de Polignac number, because 420870573 - 2⁴ = 420870557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420870773) 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 19 ways as a sum of consecutive naturals, for example, 37215 + ... + 47187.

Almost surely, 2^420870573 is an apocalyptic number.

It is an amenable number.

420870573 is a deficient number, since it is larger than the sum of its proper divisors (209107215).

420870573 is an equidigital number, since it uses as much as digits as its factorization.

420870573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10506 (or 10497 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 420870573 is about 20515.1303432369. The cubic root of 420870573 is about 749.4043109981.

The spelling of 420870573 in words is "four hundred twenty million, eight hundred seventy thousand, five hundred seventy-three".