242115437 has 2 divisors, whose sum is σ = 242115438. Its totient is φ = 242115436.

The previous prime is 242115397. The next prime is 242115439. The reversal of 242115437 is 734511242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192820996 + 49294441 = 13886^2 + 7021^2 .

It is a cyclic number.

It is not a de Polignac number, because 242115437 - 2¹² = 242111341 is a prime.

Together with 242115439, 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 (242115439) 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, 121057718 + 121057719.

It is an arithmetic number, because the mean of its divisors is an integer number (121057719).

Almost surely, 2^242115437 is an apocalyptic number.

It is an amenable number.

242115437 is a deficient number, since it is larger than the sum of its proper divisors (1).

242115437 is an equidigital number, since it uses as much as digits as its factorization.

242115437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 29.

The square root of 242115437 is about 15560.0590294510. The cubic root of 242115437 is about 623.2670389681.

Adding to 242115437 its reverse (734511242), we get a palindrome (976626679).

The spelling of 242115437 in words is "two hundred forty-two million, one hundred fifteen thousand, four hundred thirty-seven".