420510530 has 16 divisors (see below), whose sum is σ = 825729984. Its totient is φ = 152912880.

The previous prime is 420510529. The next prime is 420510539. The reversal of 420510530 is 35015024.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (420510539) 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, 1911302 + ... + 1911521.

It is an arithmetic number, because the mean of its divisors is an integer number (51608124).

Almost surely, 2^420510530 is an apocalyptic number.

420510530 is a deficient number, since it is larger than the sum of its proper divisors (405219454).

420510530 is a wasteful number, since it uses less digits than its factorization.

420510530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3822841.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 420510530 is about 20506.3534057131. The cubic root of 420510530 is about 749.1905518911.

Adding to 420510530 its reverse (35015024), we get a palindrome (455525554).

The spelling of 420510530 in words is "four hundred twenty million, five hundred ten thousand, five hundred thirty".