128908178942 has 8 divisors (see below), whose sum is σ = 193425078000. Its totient is φ = 64433152944.

The previous prime is 128908178941. The next prime is 128908178953. The reversal of 128908178942 is 249871809821.

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 (128908178941) 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, 10460567 + ... + 10472882.

It is an arithmetic number, because the mean of its divisors is an integer number (24178134750).

Almost surely, 2^128908178942 is an apocalyptic number.

128908178942 is a deficient number, since it is larger than the sum of its proper divisors (64516899058).

128908178942 is a wasteful number, since it uses less digits than its factorization.

128908178942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20936530.

The product of its (nonzero) digits is 4644864, while the sum is 59.

The spelling of 128908178942 in words is "one hundred twenty-eight billion, nine hundred eight million, one hundred seventy-eight thousand, nine hundred forty-two".