11421345 has 32 divisors (see below), whose sum is σ = 20224512. Its totient is φ = 5467392.

The previous prime is 11421323. The next prime is 11421353. The reversal of 11421345 is 54312411.

It is not a de Polignac number, because 11421345 - 2¹¹ = 11419297 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 6424 + ... + 8006.

It is an arithmetic number, because the mean of its divisors is an integer number (632016).

Almost surely, 2^11421345 is an apocalyptic number.

11421345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11421345 is a deficient number, since it is larger than the sum of its proper divisors (8803167).

11421345 is a wasteful number, since it uses less digits than its factorization.

11421345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641.

The product of its digits is 480, while the sum is 21.

The square root of 11421345 is about 3379.5480467068. The cubic root of 11421345 is about 225.2020900378.

Adding to 11421345 its reverse (54312411), we get a palindrome (65733756).

The spelling of 11421345 in words is "eleven million, four hundred twenty-one thousand, three hundred forty-five".