11842321 has 4 divisors (see below), whose sum is σ = 11852352. Its totient is φ = 11832292.

The previous prime is 11842307. The next prime is 11842349. The reversal of 11842321 is 12324811.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12324811 = 37 ⋅333103.

It is a cyclic number.

It is not a de Polignac number, because 11842321 - 2¹¹ = 11840273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11842292 and 11842301.

It is not an unprimeable number, because it can be changed into a prime (11842921) 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, 2965 + ... + 5698.

It is an arithmetic number, because the mean of its divisors is an integer number (2963088).

Almost surely, 2^11842321 is an apocalyptic number.

It is an amenable number.

11842321 is a deficient number, since it is larger than the sum of its proper divisors (10031).

11842321 is an equidigital number, since it uses as much as digits as its factorization.

11842321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10030.

The product of its digits is 384, while the sum is 22.

The square root of 11842321 is about 3441.2673537521. The cubic root of 11842321 is about 227.9356607727.

The spelling of 11842321 in words is "eleven million, eight hundred forty-two thousand, three hundred twenty-one".