242666023 has 2 divisors, whose sum is σ = 242666024. Its totient is φ = 242666022.

The previous prime is 242665987. The next prime is 242666051. The reversal of 242666023 is 320666242.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242666023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242666093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121333011 + 121333012.

It is an arithmetic number, because the mean of its divisors is an integer number (121333012).

Almost surely, 2^242666023 is an apocalyptic number.

242666023 is a deficient number, since it is larger than the sum of its proper divisors (1).

242666023 is an equidigital number, since it uses as much as digits as its factorization.

242666023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 242666023 is about 15577.7412675908. The cubic root of 242666023 is about 623.7391310055.

The spelling of 242666023 in words is "two hundred forty-two million, six hundred sixty-six thousand, twenty-three".