420943256 has 32 divisors (see below), whose sum is σ = 838725840. Its totient is φ = 197372928.

The previous prime is 420943253. The next prime is 420943261. The reversal of 420943256 is 652349024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420943253) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 33020 + ... + 43956.

Almost surely, 2^420943256 is an apocalyptic number.

It is an amenable number.

420943256 is a deficient number, since it is larger than the sum of its proper divisors (417782584).

420943256 is a wasteful number, since it uses less digits than its factorization.

420943256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11243 (or 11239 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 420943256 is about 20516.9017154150. The cubic root of 420943256 is about 749.4474484231.

The spelling of 420943256 in words is "four hundred twenty million, nine hundred forty-three thousand, two hundred fifty-six".