266042303 has 2 divisors, whose sum is σ = 266042304. Its totient is φ = 266042302.

The previous prime is 266042297. The next prime is 266042323. The reversal of 266042303 is 303240662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266042303 - 2⁶ = 266042239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266042323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133021151 + 133021152.

It is an arithmetic number, because the mean of its divisors is an integer number (133021152).

Almost surely, 2^266042303 is an apocalyptic number.

266042303 is a deficient number, since it is larger than the sum of its proper divisors (1).

266042303 is an equidigital number, since it uses as much as digits as its factorization.

266042303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 266042303 is about 16310.8032604161. The cubic root of 266042303 is about 643.1568500903.

Adding to 266042303 its reverse (303240662), we get a palindrome (569282965).

The spelling of 266042303 in words is "two hundred sixty-six million, forty-two thousand, three hundred three".