21442524041 has 4 divisors (see below), whose sum is σ = 21443679300. Its totient is φ = 21441368784.

The previous prime is 21442524011. The next prime is 21442524079. The reversal of 21442524041 is 14042524412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19741374016 + 1701150025 = 140504^2 + 41245^2 .

It is a cyclic number.

It is not a de Polignac number, because 21442524041 - 2²⁶ = 21375415177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21442523995 and 21442524013.

It is not an unprimeable number, because it can be changed into a prime (21442524011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549326 + ... + 587063.

It is an arithmetic number, because the mean of its divisors is an integer number (5360919825).

Almost surely, 2^21442524041 is an apocalyptic number.

It is an amenable number.

21442524041 is a deficient number, since it is larger than the sum of its proper divisors (1155259).

21442524041 is a wasteful number, since it uses less digits than its factorization.

21442524041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155258.

The product of its (nonzero) digits is 10240, while the sum is 29.

The spelling of 21442524041 in words is "twenty-one billion, four hundred forty-two million, five hundred twenty-four thousand, forty-one".