768243143 has 2 divisors, whose sum is σ = 768243144. Its totient is φ = 768243142.

The previous prime is 768243121. The next prime is 768243149. The reversal of 768243143 is 341342867.

It is a strong prime.

It is an emirp because it is prime and its reverse (341342867) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 768243143 - 2⁸ = 768242887 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 768243097 and 768243106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (768243149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384121571 + 384121572.

It is an arithmetic number, because the mean of its divisors is an integer number (384121572).

Almost surely, 2^768243143 is an apocalyptic number.

768243143 is a deficient number, since it is larger than the sum of its proper divisors (1).

768243143 is an equidigital number, since it uses as much as digits as its factorization.

768243143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 38.

The square root of 768243143 is about 27717.1994075881. The cubic root of 768243143 is about 915.8680259482.

The spelling of 768243143 in words is "seven hundred sixty-eight million, two hundred forty-three thousand, one hundred forty-three".