128241172 has 24 divisors (see below), whose sum is σ = 232870400. Its totient is φ = 61728480.

The previous prime is 128241163. The next prime is 128241173. The reversal of 128241172 is 271142821.

It is a self number, because there is not a number n which added to its sum of digits gives 128241172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128241173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22078 + ... + 27274.

Almost surely, 2^128241172 is an apocalyptic number.

It is an amenable number.

128241172 is a deficient number, since it is larger than the sum of its proper divisors (104629228).

128241172 is a wasteful number, since it uses less digits than its factorization.

128241172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5431 (or 5429 counting only the distinct ones).

The product of its digits is 1792, while the sum is 28.

The square root of 128241172 is about 11324.3618804770. The cubic root of 128241172 is about 504.2847397918.

Adding to 128241172 its reverse (271142821), we get a palindrome (399383993).

The spelling of 128241172 in words is "one hundred twenty-eight million, two hundred forty-one thousand, one hundred seventy-two".