21043141 has 8 divisors (see below), whose sum is σ = 24825344. Its totient is φ = 17454960.

The previous prime is 21043133. The next prime is 21043153. The reversal of 21043141 is 14134012.

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 21043141 - 2³ = 21043133 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 (21043111) 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 7 ways as a sum of consecutive naturals, for example, 48270 + ... + 48703.

It is an arithmetic number, because the mean of its divisors is an integer number (3103168).

Almost surely, 2^21043141 is an apocalyptic number.

It is an amenable number.

21043141 is a deficient number, since it is larger than the sum of its proper divisors (3782203).

21043141 is an equidigital number, since it uses as much as digits as its factorization.

21043141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97011.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 21043141 is about 4587.2803489650. The cubic root of 21043141 is about 276.0812134106.

Adding to 21043141 its reverse (14134012), we get a palindrome (35177153).

The spelling of 21043141 in words is "twenty-one million, forty-three thousand, one hundred forty-one".