420330 has 16 divisors (see below), whose sum is σ = 1008864. Its totient is φ = 112080.

The previous prime is 420323. The next prime is 420331. The reversal of 420330 is 33024.

It is a Curzon number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (420331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6976 + ... + 7035.

It is an arithmetic number, because the mean of its divisors is an integer number (63054).

2⁴²⁰³³⁰ is an apocalyptic number.

420330 is an abundant number, since it is smaller than the sum of its proper divisors (588534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420330 is a wasteful number, since it uses less digits than its factorization.

420330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14021.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 420330 is about 648.3286203770. The cubic root of 420330 is about 74.9083324509.

Adding to 420330 its reverse (33024), we get a palindrome (453354).

The spelling of 420330 in words is "four hundred twenty thousand, three hundred thirty".