420850284 has 24 divisors (see below), whose sum is σ = 1008525168. Its totient is φ = 136491840.

The previous prime is 420850279. The next prime is 420850333. The reversal of 420850284 is 482058024.

It is a happy number.

It is a super-2 number, since 2×420850284² = 354229923085761312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473487 + ... + 474374.

It is an arithmetic number, because the mean of its divisors is an integer number (42021882).

Almost surely, 2^420850284 is an apocalyptic number.

It is an amenable number.

420850284 is an abundant number, since it is smaller than the sum of its proper divisors (587674884).

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

420850284 is a wasteful number, since it uses less digits than its factorization.

420850284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947905 (or 947903 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 33.

The square root of 420850284 is about 20514.6358485838. The cubic root of 420850284 is about 749.3922685719.

The spelling of 420850284 in words is "four hundred twenty million, eight hundred fifty thousand, two hundred eighty-four".