21341241 has 12 divisors (see below), whose sum is σ = 30935268. Its totient is φ = 14177184.

The previous prime is 21341191. The next prime is 21341249. The reversal of 21341241 is 14214312.

21341241 is a `hidden beast` number, since 213 + 412 + 41 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15681600 + 5659641 = 3960^2 + 2379^2 .

It is not a de Polignac number, because 21341241 - 2¹⁰ = 21340217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21341249) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1410 + ... + 6683.

It is an arithmetic number, because the mean of its divisors is an integer number (2577939).

Almost surely, 2^21341241 is an apocalyptic number.

It is an amenable number.

21341241 is a deficient number, since it is larger than the sum of its proper divisors (9594027).

21341241 is a wasteful number, since it uses less digits than its factorization.

21341241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8392 (or 8389 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 21341241 is about 4619.6581042324. The cubic root of 21341241 is about 277.3787734436.

Adding to 21341241 its reverse (14214312), we get a palindrome (35555553).

It can be divided in two parts, 2134 and 1241, that added together give a cube (3375 = 15³).

The spelling of 21341241 in words is "twenty-one million, three hundred forty-one thousand, two hundred forty-one".