242645771 has 2 divisors, whose sum is σ = 242645772. Its totient is φ = 242645770.

The previous prime is 242645747. The next prime is 242645783. The reversal of 242645771 is 177546242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242645771 - 2⁶ = 242645707 is a prime.

It is not a weakly prime, because it can be changed into another prime (242645731) 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, 121322885 + 121322886.

It is an arithmetic number, because the mean of its divisors is an integer number (121322886).

Almost surely, 2^242645771 is an apocalyptic number.

242645771 is a deficient number, since it is larger than the sum of its proper divisors (1).

242645771 is an equidigital number, since it uses as much as digits as its factorization.

242645771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 38.

The square root of 242645771 is about 15577.0912239737. The cubic root of 242645771 is about 623.7217788767.

The spelling of 242645771 in words is "two hundred forty-two million, six hundred forty-five thousand, seven hundred seventy-one".