420875056 has 80 divisors (see below), whose sum is σ = 960081408. Its totient is φ = 174988800.

The previous prime is 420875047. The next prime is 420875071. The reversal of 420875056 is 650578024.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 1353141 + ... + 1353451.

Almost surely, 2^420875056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420875056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480040704).

420875056 is an abundant number, since it is smaller than the sum of its proper divisors (539206352).

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

420875056 is a wasteful number, since it uses less digits than its factorization.

420875056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 420875056 is about 20515.2396037677. The cubic root of 420875056 is about 749.4069718063.

The spelling of 420875056 in words is "four hundred twenty million, eight hundred seventy-five thousand, fifty-six".