242378369 has 2 divisors, whose sum is σ = 242378370. Its totient is φ = 242378368.

The previous prime is 242378341. The next prime is 242378371. The reversal of 242378369 is 963873242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229128769 + 13249600 = 15137^2 + 3640^2 .

It is a cyclic number.

It is not a de Polignac number, because 242378369 - 2⁸ = 242378113 is a prime.

It is a super-2 number, since 2×242378369² = 117494547518200322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 242378371, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (242371369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121189184 + 121189185.

It is an arithmetic number, because the mean of its divisors is an integer number (121189185).

Almost surely, 2^242378369 is an apocalyptic number.

It is an amenable number.

242378369 is a deficient number, since it is larger than the sum of its proper divisors (1).

242378369 is an equidigital number, since it uses as much as digits as its factorization.

242378369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 44.

The square root of 242378369 is about 15568.5056765253. The cubic root of 242378369 is about 623.4925754101.

The spelling of 242378369 in words is "two hundred forty-two million, three hundred seventy-eight thousand, three hundred sixty-nine".