420303756 has 12 divisors (see below), whose sum is σ = 980708792. Its totient is φ = 140101248.

The previous prime is 420303707. The next prime is 420303773. The reversal of 420303756 is 657303024.

It is a tau number, because it is divible by the number of its divisors (12).

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, 17512645 + ... + 17512668.

Almost surely, 2^420303756 is an apocalyptic number.

It is an amenable number.

420303756 is an abundant number, since it is smaller than the sum of its proper divisors (560405036).

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

420303756 is a wasteful number, since it uses less digits than its factorization.

420303756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35025320 (or 35025318 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 420303756 is about 20501.3110800261. The cubic root of 420303756 is about 749.0677340983.

The spelling of 420303756 in words is "four hundred twenty million, three hundred three thousand, seven hundred fifty-six".