128871149 has 8 divisors (see below), whose sum is σ = 140702592. Its totient is φ = 117059040.

The previous prime is 128871109. The next prime is 128871151. The reversal of 128871149 is 941178821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128871149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128871109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11537 + ... + 19769.

It is an arithmetic number, because the mean of its divisors is an integer number (17587824).

Almost surely, 2^128871149 is an apocalyptic number.

It is an amenable number.

128871149 is a deficient number, since it is larger than the sum of its proper divisors (11831443).

128871149 is a wasteful number, since it uses less digits than its factorization.

128871149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9667.

The product of its digits is 32256, while the sum is 41.

The square root of 128871149 is about 11352.1429254568. The cubic root of 128871149 is about 505.1091474042.

The spelling of 128871149 in words is "one hundred twenty-eight million, eight hundred seventy-one thousand, one hundred forty-nine".