11421641 has 32 divisors (see below), whose sum is σ = 15467520. Its totient is φ = 8164800.

The previous prime is 11421629. The next prime is 11421661. The reversal of 11421641 is 14612411.

It is not a de Polignac number, because 11421641 - 2⁶ = 11421577 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11421601) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 54026 + ... + 54236.

It is an arithmetic number, because the mean of its divisors is an integer number (483360).

Almost surely, 2^11421641 is an apocalyptic number.

11421641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11421641 is a deficient number, since it is larger than the sum of its proper divisors (4045879).

11421641 is a wasteful number, since it uses less digits than its factorization.

11421641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285.

The product of its digits is 192, while the sum is 20.

The square root of 11421641 is about 3379.5918392611. The cubic root of 11421641 is about 225.2040354958.

The spelling of 11421641 in words is "eleven million, four hundred twenty-one thousand, six hundred forty-one".