11421805 has 8 divisors (see below), whose sum is σ = 13727232. Its totient is φ = 9123408.

The previous prime is 11421803. The next prime is 11421859. The reversal of 11421805 is 50812411.

11421805 is digitally balanced in base 2, 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 not a de Polignac number, because 11421805 - 2¹ = 11421803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2992 + ... + 5638.

It is an arithmetic number, because the mean of its divisors is an integer number (1715904).

Almost surely, 2^11421805 is an apocalyptic number.

It is an amenable number.

11421805 is a deficient number, since it is larger than the sum of its proper divisors (2305427).

11421805 is an equidigital number, since it uses as much as digits as its factorization.

11421805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3515.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 11421805 is about 3379.6161024590. The cubic root of 11421805 is about 225.2051133703.

The spelling of 11421805 in words is "eleven million, four hundred twenty-one thousand, eight hundred five".