420385 has 8 divisors (see below), whose sum is σ = 576576. Its totient is φ = 288240.

The previous prime is 420383. The next prime is 420397. The reversal of 420385 is 583024.

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

It is not a de Polignac number, because 420385 - 2¹ = 420383 is a prime.

420385 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (420383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5971 + ... + 6040.

It is an arithmetic number, because the mean of its divisors is an integer number (72072).

2⁴²⁰³⁸⁵ is an apocalyptic number.

It is an amenable number.

420385 is a deficient number, since it is larger than the sum of its proper divisors (156191).

420385 is a wasteful number, since it uses less digits than its factorization.

420385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12023.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 420385 is about 648.3710357504. The cubic root of 420385 is about 74.9115995494.

The spelling of 420385 in words is "four hundred twenty thousand, three hundred eighty-five".