242609305541 has 2 divisors, whose sum is σ = 242609305542. Its totient is φ = 242609305540.

The previous prime is 242609305481. The next prime is 242609305573. The reversal of 242609305541 is 145503906242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237924450625 + 4684854916 = 487775^2 + 68446^2 .

It is a cyclic number.

It is not a de Polignac number, because 242609305541 - 2³⁴ = 225429436357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242609335541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121304652770 + 121304652771.

It is an arithmetic number, because the mean of its divisors is an integer number (121304652771).

Almost surely, 2^242609305541 is an apocalyptic number.

It is an amenable number.

242609305541 is a deficient number, since it is larger than the sum of its proper divisors (1).

242609305541 is an equidigital number, since it uses as much as digits as its factorization.

242609305541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 242609305541 in words is "two hundred forty-two billion, six hundred nine million, three hundred five thousand, five hundred forty-one".