420325321 has 4 divisors (see below), whose sum is σ = 452658052. Its totient is φ = 387992592.

The previous prime is 420325271. The next prime is 420325327. The reversal of 420325321 is 123523024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81360400 + 338964921 = 9020^2 + 18411^2 .

It is not a de Polignac number, because 420325321 - 2⁹ = 420324809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420325292 and 420325301.

It is not an unprimeable number, because it can be changed into a prime (420325327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16166346 + ... + 16166371.

It is an arithmetic number, because the mean of its divisors is an integer number (113164513).

Almost surely, 2^420325321 is an apocalyptic number.

It is an amenable number.

420325321 is a deficient number, since it is larger than the sum of its proper divisors (32332731).

420325321 is a wasteful number, since it uses less digits than its factorization.

420325321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32332730.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 420325321 is about 20501.8370152530. The cubic root of 420325321 is about 749.0805449676.

Adding to 420325321 its reverse (123523024), we get a palindrome (543848345).

The spelling of 420325321 in words is "four hundred twenty million, three hundred twenty-five thousand, three hundred twenty-one".