420856327 has 12 divisors (see below), whose sum is σ = 445318896. Its totient is φ = 397677600.

The previous prime is 420856321. The next prime is 420856363. The reversal of 420856327 is 723658024.

It is a de Polignac number, because none of the positive numbers 2^k-420856327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420856321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163702 + ... + 166252.

It is an arithmetic number, because the mean of its divisors is an integer number (37109908).

Almost surely, 2^420856327 is an apocalyptic number.

420856327 is a deficient number, since it is larger than the sum of its proper divisors (24462569).

420856327 is a wasteful number, since it uses less digits than its factorization.

420856327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046 (or 3027 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 420856327 is about 20514.7831331457. The cubic root of 420856327 is about 749.3958554023.

The spelling of 420856327 in words is "four hundred twenty million, eight hundred fifty-six thousand, three hundred twenty-seven".