420533320 has 16 divisors (see below), whose sum is σ = 946200060. Its totient is φ = 168213312.

The previous prime is 420533291. The next prime is 420533387. The reversal of 420533320 is 23335024.

420533320 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 407959204 + 12574116 = 20198^2 + 3546^2 .

It is a super-3 number, since 3×420533320³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420533291 and 420533300.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5256627 + ... + 5256706.

Almost surely, 2^420533320 is an apocalyptic number.

420533320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420533320 is an abundant number, since it is smaller than the sum of its proper divisors (525666740).

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

420533320 is a wasteful number, since it uses less digits than its factorization.

420533320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10513344 (or 10513340 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 420533320 is about 20506.9090796248. The cubic root of 420533320 is about 749.2040860304.

Adding to 420533320 its reverse (23335024), we get a palindrome (443868344).

The spelling of 420533320 in words is "four hundred twenty million, five hundred thirty-three thousand, three hundred twenty".