420218385 has 8 divisors (see below), whose sum is σ = 672349440. Its totient is φ = 224116464.

The previous prime is 420218371. The next prime is 420218419. The reversal of 420218385 is 583812024.

420218385 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420218385 - 2⁴ = 420218369 is a prime.

It is a super-3 number, since 3×420218385³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14007265 + ... + 14007294.

It is an arithmetic number, because the mean of its divisors is an integer number (84043680).

Almost surely, 2^420218385 is an apocalyptic number.

It is an amenable number.

420218385 is a deficient number, since it is larger than the sum of its proper divisors (252131055).

420218385 is a wasteful number, since it uses less digits than its factorization.

420218385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28014567.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 420218385 is about 20499.2288879362. The cubic root of 420218385 is about 749.0170144376.

The spelling of 420218385 in words is "four hundred twenty million, two hundred eighteen thousand, three hundred eighty-five".