242523191 has 2 divisors, whose sum is σ = 242523192. Its totient is φ = 242523190.

The previous prime is 242523157. The next prime is 242523223. The reversal of 242523191 is 191325242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242523191 - 2¹⁰ = 242522167 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242523101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121261595 + 121261596.

It is an arithmetic number, because the mean of its divisors is an integer number (121261596).

Almost surely, 2^242523191 is an apocalyptic number.

242523191 is a deficient number, since it is larger than the sum of its proper divisors (1).

242523191 is an equidigital number, since it uses as much as digits as its factorization.

242523191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 242523191 is about 15573.1561027301. The cubic root of 242523191 is about 623.6167304163.

The spelling of 242523191 in words is "two hundred forty-two million, five hundred twenty-three thousand, one hundred ninety-one".