142810421209 has 2 divisors, whose sum is σ = 142810421210. Its totient is φ = 142810421208.

The previous prime is 142810421203. The next prime is 142810421269. The reversal of 142810421209 is 902124018241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123703441225 + 19106979984 = 351715^2 + 138228^2 .

It is a cyclic number.

It is not a de Polignac number, because 142810421209 - 2²³ = 142802032601 is a prime.

It is not a weakly prime, because it can be changed into another prime (142810421203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71405210604 + 71405210605.

It is an arithmetic number, because the mean of its divisors is an integer number (71405210605).

Almost surely, 2^142810421209 is an apocalyptic number.

It is an amenable number.

142810421209 is a deficient number, since it is larger than the sum of its proper divisors (1).

142810421209 is an equidigital number, since it uses as much as digits as its factorization.

142810421209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 34.

The spelling of 142810421209 in words is "one hundred forty-two billion, eight hundred ten million, four hundred twenty-one thousand, two hundred nine".