242002643 has 2 divisors, whose sum is σ = 242002644. Its totient is φ = 242002642.

The previous prime is 242002637. The next prime is 242002679. The reversal of 242002643 is 346200242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242002643 - 2⁴ = 242002627 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242002603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121001321 + 121001322.

It is an arithmetic number, because the mean of its divisors is an integer number (121001322).

Almost surely, 2^242002643 is an apocalyptic number.

242002643 is a deficient number, since it is larger than the sum of its proper divisors (1).

242002643 is an equidigital number, since it uses as much as digits as its factorization.

242002643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 242002643 is about 15556.4341351095. The cubic root of 242002643 is about 623.1702370691.

Adding to 242002643 its reverse (346200242), we get a palindrome (588202885).

The spelling of 242002643 in words is "two hundred forty-two million, two thousand, six hundred forty-three".