420233321 has 2 divisors, whose sum is σ = 420233322. Its totient is φ = 420233320.

The previous prime is 420233291. The next prime is 420233351. The reversal of 420233321 is 123332024.

It is a balanced prime because it is at equal distance from previous prime (420233291) and next prime (420233351).

It can be written as a sum of positive squares in only one way, i.e., 343583296 + 76650025 = 18536^2 + 8755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420233321 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 420233293 and 420233302.

It is not a weakly prime, because it can be changed into another prime (420233351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210116660 + 210116661.

It is an arithmetic number, because the mean of its divisors is an integer number (210116661).

Almost surely, 2^420233321 is an apocalyptic number.

It is an amenable number.

420233321 is a deficient number, since it is larger than the sum of its proper divisors (1).

420233321 is an equidigital number, since it uses as much as digits as its factorization.

420233321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 420233321 is about 20499.5931910855. The cubic root of 420233321 is about 749.0258885421.

Adding to 420233321 its reverse (123332024), we get a palindrome (543565345).

The spelling of 420233321 in words is "four hundred twenty million, two hundred thirty-three thousand, three hundred twenty-one".