128568142 has 8 divisors (see below), whose sum is σ = 196491096. Its totient is φ = 63071112.

The previous prime is 128568133. The next prime is 128568163. The reversal of 128568142 is 241865821.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606348 + ... + 606559.

It is an arithmetic number, because the mean of its divisors is an integer number (24561387).

Almost surely, 2^128568142 is an apocalyptic number.

128568142 is a deficient number, since it is larger than the sum of its proper divisors (67922954).

128568142 is a wasteful number, since it uses less digits than its factorization.

128568142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212962.

The product of its digits is 30720, while the sum is 37.

The square root of 128568142 is about 11338.7892651729. The cubic root of 128568142 is about 504.7129591204.

The spelling of 128568142 in words is "one hundred twenty-eight million, five hundred sixty-eight thousand, one hundred forty-two".