142266647689 has 2 divisors, whose sum is σ = 142266647690. Its totient is φ = 142266647688.

The previous prime is 142266647641. The next prime is 142266647723. The reversal of 142266647689 is 986746662241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97286600464 + 44980047225 = 311908^2 + 212085^2 .

It is a cyclic number.

It is not a de Polignac number, because 142266647689 - 2¹⁷ = 142266516617 is a prime.

It is not a weakly prime, because it can be changed into another prime (142266647609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71133323844 + 71133323845.

It is an arithmetic number, because the mean of its divisors is an integer number (71133323845).

Almost surely, 2^142266647689 is an apocalyptic number.

It is an amenable number.

142266647689 is a deficient number, since it is larger than the sum of its proper divisors (1).

142266647689 is an equidigital number, since it uses as much as digits as its factorization.

142266647689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41803776, while the sum is 61.

The spelling of 142266647689 in words is "one hundred forty-two billion, two hundred sixty-six million, six hundred forty-seven thousand, six hundred eighty-nine".