242760181 has 2 divisors, whose sum is σ = 242760182. Its totient is φ = 242760180.

The previous prime is 242760179. The next prime is 242760191. The reversal of 242760181 is 181067242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220997956 + 21762225 = 14866^2 + 4665^2 .

It is a cyclic number.

It is not a de Polignac number, because 242760181 - 2¹ = 242760179 is a prime.

It is a super-2 number, since 2×242760181² = 117865010958305522, which contains 22 as substring.

Together with 242760179, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242760191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121380090 + 121380091.

It is an arithmetic number, because the mean of its divisors is an integer number (121380091).

Almost surely, 2^242760181 is an apocalyptic number.

It is an amenable number.

242760181 is a deficient number, since it is larger than the sum of its proper divisors (1).

242760181 is an equidigital number, since it uses as much as digits as its factorization.

242760181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 242760181 is about 15580.7631712956. The cubic root of 242760181 is about 623.8197939045.

The spelling of 242760181 in words is "two hundred forty-two million, seven hundred sixty thousand, one hundred eighty-one".