128932142 has 8 divisors (see below), whose sum is σ = 194009256. Its totient is φ = 64262392.

The previous prime is 128932127. The next prime is 128932147. The reversal of 128932142 is 241239821.

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

It is a junction number, because it is equal to n+sod(n) for n = 128932099 and 128932108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128932147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101048 + ... + 102315.

It is an arithmetic number, because the mean of its divisors is an integer number (24251157).

Almost surely, 2^128932142 is an apocalyptic number.

128932142 is a deficient number, since it is larger than the sum of its proper divisors (65077114).

128932142 is a wasteful number, since it uses less digits than its factorization.

128932142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203682.

The product of its digits is 6912, while the sum is 32.

The square root of 128932142 is about 11354.8290167664. The cubic root of 128932142 is about 505.1888219820.

The spelling of 128932142 in words is "one hundred twenty-eight million, nine hundred thirty-two thousand, one hundred forty-two".