242970617 has 2 divisors, whose sum is σ = 242970618. Its totient is φ = 242970616.

The previous prime is 242970593. The next prime is 242970619. The reversal of 242970617 is 716079242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242861056 + 109561 = 15584^2 + 331^2 .

It is a cyclic number.

It is not a de Polignac number, because 242970617 - 2⁸ = 242970361 is a prime.

Together with 242970619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242970619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121485308 + 121485309.

It is an arithmetic number, because the mean of its divisors is an integer number (121485309).

Almost surely, 2^242970617 is an apocalyptic number.

It is an amenable number.

242970617 is a deficient number, since it is larger than the sum of its proper divisors (1).

242970617 is an equidigital number, since it uses as much as digits as its factorization.

242970617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 242970617 is about 15587.5147794637. The cubic root of 242970617 is about 623.9999940075. Note that the first 5 decimals are identical.

The spelling of 242970617 in words is "two hundred forty-two million, nine hundred seventy thousand, six hundred seventeen".