242366857 has 2 divisors, whose sum is σ = 242366858. Its totient is φ = 242366856.

The previous prime is 242366851. The next prime is 242366879. The reversal of 242366857 is 758663242.

242366857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177982281 + 64384576 = 13341^2 + 8024^2 .

It is a cyclic number.

It is not a de Polignac number, because 242366857 - 2³ = 242366849 is a prime.

It is not a weakly prime, because it can be changed into another prime (242366851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121183428 + 121183429.

It is an arithmetic number, because the mean of its divisors is an integer number (121183429).

Almost surely, 2^242366857 is an apocalyptic number.

It is an amenable number.

242366857 is a deficient number, since it is larger than the sum of its proper divisors (1).

242366857 is an equidigital number, since it uses as much as digits as its factorization.

242366857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 43.

The square root of 242366857 is about 15568.1359513591. The cubic root of 242366857 is about 623.4827041219.

The spelling of 242366857 in words is "two hundred forty-two million, three hundred sixty-six thousand, eight hundred fifty-seven".