420420208 has 20 divisors (see below), whose sum is σ = 877223368. Its totient is φ = 194040000.

The previous prime is 420420179. The next prime is 420420241. The reversal of 420420208 is 802024024.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 1010418 + ... + 1010833.

Almost surely, 2^420420208 is an apocalyptic number.

It is an amenable number.

420420208 is an abundant number, since it is smaller than the sum of its proper divisors (456803160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420420208 is a wasteful number, since it uses less digits than its factorization.

420420208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021272 (or 2021266 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 420420208 is about 20504.1509943718. The cubic root of 420420208 is about 749.1369081814.

The spelling of 420420208 in words is "four hundred twenty million, four hundred twenty thousand, two hundred eight".