142642178 has 16 divisors (see below), whose sum is σ = 251139264. Its totient is φ = 59479920.

The previous prime is 142642153. The next prime is 142642183. The reversal of 142642178 is 871246241.

It is a Curzon 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, 137168 + ... + 138203.

It is an arithmetic number, because the mean of its divisors is an integer number (15696204).

Almost surely, 2^142642178 is an apocalyptic number.

142642178 is a deficient number, since it is larger than the sum of its proper divisors (108497086).

142642178 is a wasteful number, since it uses less digits than its factorization.

142642178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275417.

The product of its digits is 21504, while the sum is 35.

The square root of 142642178 is about 11943.2900827201. The cubic root of 142642178 is about 522.4956195691.

The spelling of 142642178 in words is "one hundred forty-two million, six hundred forty-two thousand, one hundred seventy-eight".