142109678 has 8 divisors (see below), whose sum is σ = 213475080. Its totient is φ = 70951320.

The previous prime is 142109677. The next prime is 142109699. The reversal of 142109678 is 876901241.

142109678 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142109677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50033 + ... + 52796.

It is an arithmetic number, because the mean of its divisors is an integer number (26684385).

Almost surely, 2^142109678 is an apocalyptic number.

142109678 is a deficient number, since it is larger than the sum of its proper divisors (71365402).

142109678 is a wasteful number, since it uses less digits than its factorization.

142109678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103522.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 142109678 is about 11920.9763861858. The cubic root of 142109678 is about 521.8446296548.

The spelling of 142109678 in words is "one hundred forty-two million, one hundred nine thousand, six hundred seventy-eight".