11421305 has 8 divisors (see below), whose sum is σ = 15663552. Its totient is φ = 7831728.

The previous prime is 11421269. The next prime is 11421323. The reversal of 11421305 is 50312411.

11421305 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11421305 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 163127 + ... + 163196.

It is an arithmetic number, because the mean of its divisors is an integer number (1957944).

Almost surely, 2^11421305 is an apocalyptic number.

It is an amenable number.

11421305 is a deficient number, since it is larger than the sum of its proper divisors (4242247).

11421305 is an equidigital number, since it uses as much as digits as its factorization.

11421305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326335.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 11421305 is about 3379.5421287506. The cubic root of 11421305 is about 225.2018271355.

Adding to 11421305 its reverse (50312411), we get a palindrome (61733716).

The spelling of 11421305 in words is "eleven million, four hundred twenty-one thousand, three hundred five".