142303247 has 2 divisors, whose sum is σ = 142303248. Its totient is φ = 142303246.

The previous prime is 142303223. The next prime is 142303283. The reversal of 142303247 is 742303241.

It is a weak prime.

It is an emirp because it is prime and its reverse (742303241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142303247 - 2⁸ = 142302991 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 (142306247) 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, 71151623 + 71151624.

It is an arithmetic number, because the mean of its divisors is an integer number (71151624).

Almost surely, 2^142303247 is an apocalyptic number.

142303247 is a deficient number, since it is larger than the sum of its proper divisors (1).

142303247 is an equidigital number, since it uses as much as digits as its factorization.

142303247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 142303247 is about 11929.0924633855. The cubic root of 142303247 is about 522.0814587379.

Adding to 142303247 its reverse (742303241), we get a palindrome (884606488).

The spelling of 142303247 in words is "one hundred forty-two million, three hundred three thousand, two hundred forty-seven".