7841321 has 4 divisors (see below), whose sum is σ = 8182272. Its totient is φ = 7500372.

The previous prime is 7841263. The next prime is 7841341. The reversal of 7841321 is 1231487.

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 7841321 - 2¹⁰ = 7840297 is a prime.

It is a super-2 number, since 2×7841321² = 122972630050082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7841341) 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 3 ways as a sum of consecutive naturals, for example, 170441 + ... + 170486.

It is an arithmetic number, because the mean of its divisors is an integer number (2045568).

Almost surely, 2^7841321 is an apocalyptic number.

It is an amenable number.

7841321 is a deficient number, since it is larger than the sum of its proper divisors (340951).

7841321 is a wasteful number, since it uses less digits than its factorization.

7841321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340950.

The product of its digits is 1344, while the sum is 26.

The square root of 7841321 is about 2800.2358829213. The cubic root of 7841321 is about 198.6688346510.

The spelling of 7841321 in words is "seven million, eight hundred forty-one thousand, three hundred twenty-one".