302240143 has 2 divisors, whose sum is σ = 302240144. Its totient is φ = 302240142.

The previous prime is 302240129. The next prime is 302240153. The reversal of 302240143 is 341042203.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-302240143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 302240143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (302240153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151120071 + 151120072.

It is an arithmetic number, because the mean of its divisors is an integer number (151120072).

Almost surely, 2^302240143 is an apocalyptic number.

302240143 is a deficient number, since it is larger than the sum of its proper divisors (1).

302240143 is an equidigital number, since it uses as much as digits as its factorization.

302240143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 302240143 is about 17385.0551624089. The cubic root of 302240143 is about 671.0950704214.

Adding to 302240143 its reverse (341042203), we get a palindrome (643282346).

The spelling of 302240143 in words is "three hundred two million, two hundred forty thousand, one hundred forty-three".