128144112 has 20 divisors (see below), whose sum is σ = 331039080. Its totient is φ = 42714688.

The previous prime is 128144101. The next prime is 128144117. The reversal of 128144112 is 211441821.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128144117) 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, 1334787 + ... + 1334882.

It is an arithmetic number, because the mean of its divisors is an integer number (16551954).

Almost surely, 2^128144112 is an apocalyptic number.

128144112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128144112 is an abundant number, since it is smaller than the sum of its proper divisors (202894968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128144112 is a wasteful number, since it uses less digits than its factorization.

128144112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669680 (or 2669674 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

The square root of 128144112 is about 11320.0756181220. The cubic root of 128144112 is about 504.1574841697.

Adding to 128144112 its reverse (211441821), we get a palindrome (339585933).

The spelling of 128144112 in words is "one hundred twenty-eight million, one hundred forty-four thousand, one hundred twelve".