420301220 has 12 divisors (see below), whose sum is σ = 882632604. Its totient is φ = 168120480.

The previous prime is 420301207. The next prime is 420301247. The reversal of 420301220 is 22103024.

It can be written as a sum of positive squares in 2 ways, for example, as 261339556 + 158961664 = 16166^2 + 12608^2 .

It is a junction number, because it is equal to n+sod(n) for n = 420301195 and 420301204.

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, 10507511 + ... + 10507550.

It is an arithmetic number, because the mean of its divisors is an integer number (73552717).

Almost surely, 2^420301220 is an apocalyptic number.

It is an amenable number.

420301220 is an abundant number, since it is smaller than the sum of its proper divisors (462331384).

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

420301220 is a wasteful number, since it uses less digits than its factorization.

420301220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21015070 (or 21015068 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 420301220 is about 20501.2492302298. The cubic root of 420301220 is about 749.0662275374.

Adding to 420301220 its reverse (22103024), we get a palindrome (442404244).

The spelling of 420301220 in words is "four hundred twenty million, three hundred one thousand, two hundred twenty".