1422321 has 8 divisors (see below), whose sum is σ = 1996320. Its totient is φ = 898272.

The previous prime is 1422293. The next prime is 1422367. The reversal of 1422321 is 1232241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1422321 - 2⁶ = 1422257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1422321.

It is not an unprimeable number, because it can be changed into a prime (1422221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12420 + ... + 12533.

It is an arithmetic number, because the mean of its divisors is an integer number (249540).

2^1422321 is an apocalyptic number.

It is an amenable number.

1422321 is a deficient number, since it is larger than the sum of its proper divisors (573999).

1422321 is a wasteful number, since it uses less digits than its factorization.

1422321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24975.

The product of its digits is 96, while the sum is 15.

The square root of 1422321 is about 1192.6110011232. The cubic root of 1422321 is about 112.4602921593.

Adding to 1422321 its reverse (1232241), we get a palindrome (2654562).

The spelling of 1422321 in words is "one million, four hundred twenty-two thousand, three hundred twenty-one".