142178166 has 40 divisors (see below), whose sum is σ = 343095984. Its totient is φ = 43746480.

The previous prime is 142178131. The next prime is 142178173. The reversal of 142178166 is 661871241.

It is a happy number.

142178166 is a `hidden beast` number, since 1 + 421 + 78 + 166 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 142178166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31650 + ... + 35861.

Almost surely, 2^142178166 is an apocalyptic number.

142178166 is an abundant number, since it is smaller than the sum of its proper divisors (200917818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142178166 is a wasteful number, since it uses less digits than its factorization.

142178166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67538 (or 67529 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 142178166 is about 11923.8486236617. The cubic root of 142178166 is about 521.9284483774.

The spelling of 142178166 in words is "one hundred forty-two million, one hundred seventy-eight thousand, one hundred sixty-six".