142395797689 has 2 divisors, whose sum is σ = 142395797690. Its totient is φ = 142395797688.

The previous prime is 142395797633. The next prime is 142395797693. The reversal of 142395797689 is 986797593241.

It is a happy number.

142395797689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92100110400 + 50295687289 = 303480^2 + 224267^2 .

It is a cyclic number.

It is not a de Polignac number, because 142395797689 - 2⁹ = 142395797177 is a prime.

It is not a weakly prime, because it can be changed into another prime (142395797189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71197898844 + 71197898845.

It is an arithmetic number, because the mean of its divisors is an integer number (71197898845).

Almost surely, 2^142395797689 is an apocalyptic number.

It is an amenable number.

142395797689 is a deficient number, since it is larger than the sum of its proper divisors (1).

142395797689 is an equidigital number, since it uses as much as digits as its factorization.

142395797689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 205752960, while the sum is 70.

The spelling of 142395797689 in words is "one hundred forty-two billion, three hundred ninety-five million, seven hundred ninety-seven thousand, six hundred eighty-nine".