7144321 has 4 divisors (see below), whose sum is σ = 7310512. Its totient is φ = 6978132.

The previous prime is 7144307. The next prime is 7144327. The reversal of 7144321 is 1234417.

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 7144321 - 2⁵ = 7144289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7144292 and 7144301.

It is not an unprimeable number, because it can be changed into a prime (7144327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83031 + ... + 83116.

It is an arithmetic number, because the mean of its divisors is an integer number (1827628).

Almost surely, 2^7144321 is an apocalyptic number.

It is an amenable number.

7144321 is a deficient number, since it is larger than the sum of its proper divisors (166191).

7144321 is a wasteful number, since it uses less digits than its factorization.

7144321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166190.

The product of its digits is 672, while the sum is 22.

The square root of 7144321 is about 2672.8862676889. The cubic root of 7144321 is about 192.5988338264.

Adding to 7144321 its reverse (1234417), we get a palindrome (8378738).

The spelling of 7144321 in words is "seven million, one hundred forty-four thousand, three hundred twenty-one".