142066197905 has 8 divisors (see below), whose sum is σ = 170908859112. Its totient is φ = 113366677248.

The previous prime is 142066197893. The next prime is 142066197929. The reversal of 142066197905 is 509791660241.

It can be written as a sum of positive squares in 4 ways, for example, as 40605474064 + 101460723841 = 201508^2 + 318529^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142066197905 - 2⁶ = 142066197841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35782952 + ... + 35786921.

It is an arithmetic number, because the mean of its divisors is an integer number (21363607389).

Almost surely, 2^142066197905 is an apocalyptic number.

It is an amenable number.

142066197905 is a deficient number, since it is larger than the sum of its proper divisors (28842661207).

142066197905 is an equidigital number, since it uses as much as digits as its factorization.

142066197905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71570275.

The product of its (nonzero) digits is 816480, while the sum is 50.

The spelling of 142066197905 in words is "one hundred forty-two billion, sixty-six million, one hundred ninety-seven thousand, nine hundred five".