242240382661 has 2 divisors, whose sum is σ = 242240382662. Its totient is φ = 242240382660.

The previous prime is 242240382649. The next prime is 242240382757. The reversal of 242240382661 is 166283042242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217538288100 + 24702094561 = 466410^2 + 157169^2 .

It is a cyclic number.

It is not a de Polignac number, because 242240382661 - 2¹⁵ = 242240349893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242240322661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121120191330 + 121120191331.

It is an arithmetic number, because the mean of its divisors is an integer number (121120191331).

Almost surely, 2^242240382661 is an apocalyptic number.

It is an amenable number.

242240382661 is a deficient number, since it is larger than the sum of its proper divisors (1).

242240382661 is an equidigital number, since it uses as much as digits as its factorization.

242240382661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 242240382661 in words is "two hundred forty-two billion, two hundred forty million, three hundred eighty-two thousand, six hundred sixty-one".