420530 has 16 divisors (see below), whose sum is σ = 825984. Its totient is φ = 152880.

The previous prime is 420521. The next prime is 420551. The reversal of 420530 is 35024.

420530 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 420530.

It is an unprimeable number.

420530 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1802 + ... + 2021.

It is an arithmetic number, because the mean of its divisors is an integer number (51624).

2⁴²⁰⁵³⁰ is an apocalyptic number.

420530 is a deficient number, since it is larger than the sum of its proper divisors (405454).

420530 is a wasteful number, since it uses less digits than its factorization.

420530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 420530 is about 648.4828448001. The cubic root of 420530 is about 74.9202114435.

Adding to 420530 its reverse (35024), we get a palindrome (455554).

The spelling of 420530 in words is "four hundred twenty thousand, five hundred thirty".