242891713 has 2 divisors, whose sum is σ = 242891714. Its totient is φ = 242891712.

The previous prime is 242891711. The next prime is 242891771. The reversal of 242891713 is 317198242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219543489 + 23348224 = 14817^2 + 4832^2 .

It is a cyclic number.

It is not a de Polignac number, because 242891713 - 2¹ = 242891711 is a prime.

Together with 242891711, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (242891711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121445856 + 121445857.

It is an arithmetic number, because the mean of its divisors is an integer number (121445857).

Almost surely, 2^242891713 is an apocalyptic number.

It is an amenable number.

242891713 is a deficient number, since it is larger than the sum of its proper divisors (1).

242891713 is an equidigital number, since it uses as much as digits as its factorization.

242891713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 242891713 is about 15584.9835739407. The cubic root of 242891713 is about 623.9324393009.

The spelling of 242891713 in words is "two hundred forty-two million, eight hundred ninety-one thousand, seven hundred thirteen".