7321423 has 4 divisors (see below), whose sum is σ = 7379200. Its totient is φ = 7263648.

The previous prime is 7321399. The next prime is 7321439. The reversal of 7321423 is 3241237.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7321423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7321394 and 7321403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7321453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28698 + ... + 28951.

It is an arithmetic number, because the mean of its divisors is an integer number (1844800).

Almost surely, 2^7321423 is an apocalyptic number.

7321423 is a deficient number, since it is larger than the sum of its proper divisors (57777).

7321423 is a wasteful number, since it uses less digits than its factorization.

7321423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57776.

The product of its digits is 1008, while the sum is 22.

The square root of 7321423 is about 2705.8128168815. The cubic root of 7321423 is about 194.1773186597.

It can be divided in two parts, 73214 and 23, that added together give a palindrome (73237).

The spelling of 7321423 in words is "seven million, three hundred twenty-one thousand, four hundred twenty-three".