11421056 has 16 divisors (see below), whose sum is σ = 22753140. Its totient is φ = 5710464.

The previous prime is 11421037. The next prime is 11421061. The reversal of 11421056 is 65012411.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44486 + ... + 44741.

Almost surely, 2^11421056 is an apocalyptic number.

11421056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11421056 is a deficient number, since it is larger than the sum of its proper divisors (11332084).

11421056 is an frugal number, since it uses more digits than its factorization.

11421056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89241 (or 89229 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 11421056 is about 3379.5052892398. The cubic root of 11421056 is about 225.2001905548.

Adding to 11421056 its reverse (65012411), we get a palindrome (76433467).

The spelling of 11421056 in words is "eleven million, four hundred twenty-one thousand, fifty-six".