1423321 has 2 divisors, whose sum is σ = 1423322. Its totient is φ = 1423320.

The previous prime is 1423319. The next prime is 1423327. The reversal of 1423321 is 1233241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1254400 + 168921 = 1120^2 + 411^2 .

It is an emirp because it is prime and its reverse (1233241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1423321 - 2¹ = 1423319 is a prime.

Together with 1423319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1423295 and 1423304.

It is not a weakly prime, because it can be changed into another prime (1423327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711660 + 711661.

It is an arithmetic number, because the mean of its divisors is an integer number (711661).

2^1423321 is an apocalyptic number.

It is an amenable number.

1423321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423321 is an equidigital number, since it uses as much as digits as its factorization.

1423321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 16.

The square root of 1423321 is about 1193.0301756452. The cubic root of 1423321 is about 112.4866420354.

Adding to 1423321 its reverse (1233241), we get a palindrome (2656562).

The spelling of 1423321 in words is "one million, four hundred twenty-three thousand, three hundred twenty-one".