128151243 has 24 divisors (see below), whose sum is σ = 202378176. Its totient is φ = 77497200.

The previous prime is 128151229. The next prime is 128151271. The reversal of 128151243 is 342151821.

It is not a de Polignac number, because 128151243 - 2⁴ = 128151227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128151743) 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 23 ways as a sum of consecutive naturals, for example, 55396 + ... + 57662.

It is an arithmetic number, because the mean of its divisors is an integer number (8432424).

Almost surely, 2^128151243 is an apocalyptic number.

128151243 is a deficient number, since it is larger than the sum of its proper divisors (74226933).

128151243 is a wasteful number, since it uses less digits than its factorization.

128151243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855 (or 2852 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 128151243 is about 11320.3905851344. The cubic root of 128151243 is about 504.1668358293.

The spelling of 128151243 in words is "one hundred twenty-eight million, one hundred fifty-one thousand, two hundred forty-three".