142117170778 has 16 divisors (see below), whose sum is σ = 238227454080. Its totient is φ = 63023135200.

The previous prime is 142117170761. The next prime is 142117170799. The reversal of 142117170778 is 877071711241.

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, 78778018 + ... + 78779821.

It is an arithmetic number, because the mean of its divisors is an integer number (14889215880).

Almost surely, 2^142117170778 is an apocalyptic number.

142117170778 is a deficient number, since it is larger than the sum of its proper divisors (96110283302).

142117170778 is a wasteful number, since it uses less digits than its factorization.

142117170778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157557893.

The product of its (nonzero) digits is 153664, while the sum is 46.

The spelling of 142117170778 in words is "one hundred forty-two billion, one hundred seventeen million, one hundred seventy thousand, seven hundred seventy-eight".