142668751 has 2 divisors, whose sum is σ = 142668752. Its totient is φ = 142668750.

The previous prime is 142668731. The next prime is 142668803. The reversal of 142668751 is 157866241.

142668751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142668751 - 2²³ = 134280143 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 (142668731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71334375 + 71334376.

It is an arithmetic number, because the mean of its divisors is an integer number (71334376).

Almost surely, 2^142668751 is an apocalyptic number.

142668751 is a deficient number, since it is larger than the sum of its proper divisors (1).

142668751 is an equidigital number, since it uses as much as digits as its factorization.

142668751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 142668751 is about 11944.4024965672. The cubic root of 142668751 is about 522.5280630212.

The spelling of 142668751 in words is "one hundred forty-two million, six hundred sixty-eight thousand, seven hundred fifty-one".