7423321 has 8 divisors (see below), whose sum is σ = 7712640. Its totient is φ = 7139568.

The previous prime is 7423307. The next prime is 7423327. The reversal of 7423321 is 1233247.

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

It is a cyclic number.

It is not a de Polignac number, because 7423321 - 2⁷ = 7423193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7423292 and 7423301.

It is not an unprimeable number, because it can be changed into a prime (7423327) 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 7 ways as a sum of consecutive naturals, for example, 1435 + ... + 4111.

It is an arithmetic number, because the mean of its divisors is an integer number (964080).

Almost surely, 2^7423321 is an apocalyptic number.

It is an amenable number.

7423321 is a deficient number, since it is larger than the sum of its proper divisors (289319).

7423321 is a wasteful number, since it uses less digits than its factorization.

7423321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783.

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

The square root of 7423321 is about 2724.5772149088. The cubic root of 7423321 is about 195.0740109155.

Adding to 7423321 its reverse (1233247), we get a palindrome (8656568).

It can be divided in two parts, 7423 and 321, that added together give a square (7744 = 88²).

The spelling of 7423321 in words is "seven million, four hundred twenty-three thousand, three hundred twenty-one".