420402208 has 24 divisors (see below), whose sum is σ = 871229520. Its totient is φ = 199137600.

The previous prime is 420402181. The next prime is 420402223. The reversal of 420402208 is 802204024.

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 3 ways as a sum of consecutive naturals, for example, 345118 + ... + 346333.

It is an arithmetic number, because the mean of its divisors is an integer number (36301230).

Almost surely, 2^420402208 is an apocalyptic number.

It is an amenable number.

420402208 is an abundant number, since it is smaller than the sum of its proper divisors (450827312).

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

420402208 is a wasteful number, since it uses less digits than its factorization.

420402208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691480 (or 691472 counting only the distinct ones).

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

The square root of 420402208 is about 20503.7120541623. The cubic root of 420402208 is about 749.1262167695.

The spelling of 420402208 in words is "four hundred twenty million, four hundred two thousand, two hundred eight".