21074619241 has 15 divisors (see below), whose sum is σ = 22857385281. Its totient is φ = 19430848008.

The previous prime is 21074619229. The next prime is 21074619259. The reversal of 21074619241 is 14291647012.

The square root of 21074619241 is 145171.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 10449132841 + 10625486400 = 102221^2 + 103080^2 .

It is not a de Polignac number, because 21074619241 - 2⁹ = 21074618729 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21074619241.

It is not an unprimeable number, because it can be changed into a prime (21074619281) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 24533470 + ... + 24534328.

Almost surely, 2^21074619241 is an apocalyptic number.

21074619241 is the 145171-st square number.

21074619241 is the 72586-th centered octagonal number.

It is an amenable number.

21074619241 is a deficient number, since it is larger than the sum of its proper divisors (1782766040).

21074619241 is an frugal number, since it uses more digits than its factorization.

21074619241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770 (or 872 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 21074619241 in words is "twenty-one billion, seventy-four million, six hundred nineteen thousand, two hundred forty-one".