420930 has 32 divisors (see below), whose sum is σ = 1123200. Its totient is φ = 112176.

The previous prime is 420929. The next prime is 420941. The reversal of 420930 is 39024.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 420930.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510 + ... + 1049.

It is an arithmetic number, because the mean of its divisors is an integer number (35100).

2⁴²⁰⁹³⁰ is an apocalyptic number.

420930 is an abundant number, since it is smaller than the sum of its proper divisors (702270).

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

420930 is a wasteful number, since it uses less digits than its factorization.

420930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575 (or 1569 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 420930 is about 648.7911836639. The cubic root of 420930 is about 74.9439581346.

Adding to 420930 its reverse (39024), we get a palindrome (459954).

The spelling of 420930 in words is "four hundred twenty thousand, nine hundred thirty".