128168842 has 16 divisors (see below), whose sum is σ = 194483520. Its totient is φ = 63345312.

The previous prime is 128168837. The next prime is 128168863. The reversal of 128168842 is 248861821.

It is a junction number, because it is equal to n+sod(n) for n = 128168795 and 128168804.

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, 72238 + ... + 73990.

It is an arithmetic number, because the mean of its divisors is an integer number (12155220).

Almost surely, 2^128168842 is an apocalyptic number.

128168842 is a deficient number, since it is larger than the sum of its proper divisors (66314678).

128168842 is a wasteful number, since it uses less digits than its factorization.

128168842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157.

The product of its digits is 49152, while the sum is 40.

The square root of 128168842 is about 11321.1678726181. The cubic root of 128168842 is about 504.1899138367.

The spelling of 128168842 in words is "one hundred twenty-eight million, one hundred sixty-eight thousand, eight hundred forty-two".