1402321 has 4 divisors (see below), whose sum is σ = 1422144. Its totient is φ = 1382500.

The previous prime is 1402309. The next prime is 1402361. The reversal of 1402321 is 1232041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1402321 - 2⁹ = 1401809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1402301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9805 + ... + 9946.

It is an arithmetic number, because the mean of its divisors is an integer number (355536).

2^1402321 is an apocalyptic number.

It is an amenable number.

1402321 is a deficient number, since it is larger than the sum of its proper divisors (19823).

1402321 is an equidigital number, since it uses as much as digits as its factorization.

1402321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19822.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1402321 is about 1184.1963519620. The cubic root of 1402321 is about 111.9306809579.

Adding to 1402321 its reverse (1232041), we get a palindrome (2634362).

The spelling of 1402321 in words is "one million, four hundred two thousand, three hundred twenty-one".