241561437121 has 3 divisors (see below), whose sum is σ = 241561928611. Its totient is φ = 241560945632.

The previous prime is 241561437119. The next prime is 241561437133. The reversal of 241561437121 is 121734165142.

The square root of 241561437121 is 491489.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 225208142721 + 16353294400 = 474561^2 + 127880^2 .

It is not a de Polignac number, because 241561437121 - 2¹ = 241561437119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (241561437101) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 245745 + ... + 737233.

Almost surely, 2^241561437121 is an apocalyptic number.

241561437121 is the 491489-th square number.

241561437121 is the 245745-th centered octagonal number.

It is an amenable number.

241561437121 is a deficient number, since it is larger than the sum of its proper divisors (491490).

241561437121 is an frugal number, since it uses more digits than its factorization.

241561437121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982978 (or 491489 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The spelling of 241561437121 in words is "two hundred forty-one billion, five hundred sixty-one million, four hundred thirty-seven thousand, one hundred twenty-one".