420443385 has 16 divisors (see below), whose sum is σ = 673021440. Its totient is φ = 224132480.

The previous prime is 420443383. The next prime is 420443393. The reversal of 420443385 is 583344024.

It is not a de Polignac number, because 420443385 - 2¹ = 420443383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420443383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35800 + ... + 46070.

It is an arithmetic number, because the mean of its divisors is an integer number (42063840).

Almost surely, 2^420443385 is an apocalyptic number.

It is an amenable number.

420443385 is a deficient number, since it is larger than the sum of its proper divisors (252578055).

420443385 is a wasteful number, since it uses less digits than its factorization.

420443385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13008.

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 420443385 is about 20504.7161648241. The cubic root of 420443385 is about 749.1506741127.

The spelling of 420443385 in words is "four hundred twenty million, four hundred forty-three thousand, three hundred eighty-five".