242613689 has 2 divisors, whose sum is σ = 242613690. Its totient is φ = 242613688.

The previous prime is 242613673. The next prime is 242613691. The reversal of 242613689 is 986316242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239228089 + 3385600 = 15467^2 + 1840^2 .

It is a cyclic number.

It is not a de Polignac number, because 242613689 - 2⁴ = 242613673 is a prime.

It is a super-2 number, since 2×242613689² = 117722804180377442, which contains 22 as substring.

Together with 242613691, 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 (242613659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121306844 + 121306845.

It is an arithmetic number, because the mean of its divisors is an integer number (121306845).

Almost surely, 2^242613689 is an apocalyptic number.

It is an amenable number.

242613689 is a deficient number, since it is larger than the sum of its proper divisors (1).

242613689 is an equidigital number, since it uses as much as digits as its factorization.

242613689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The square root of 242613689 is about 15576.0614084562. The cubic root of 242613689 is about 623.6942887017.

The spelling of 242613689 in words is "two hundred forty-two million, six hundred thirteen thousand, six hundred eighty-nine".