128701120 has 56 divisors (see below), whose sum is σ = 309981600. Its totient is φ = 50890752.

The previous prime is 128701109. The next prime is 128701121. The reversal of 128701120 is 21107821.

It is a junction number, because it is equal to n+sod(n) for n = 128701091 and 128701100.

It is not an unprimeable number, because it can be changed into a prime (128701121) 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, 26221 + ... + 30739.

Almost surely, 2^128701120 is an apocalyptic number.

128701120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128701120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154990800).

128701120 is an abundant number, since it is smaller than the sum of its proper divisors (181280480).

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

128701120 is an equidigital number, since it uses as much as digits as its factorization.

128701120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4625 (or 4615 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 128701120 is about 11344.6516032887. The cubic root of 128701120 is about 504.8869073289.

Adding to 128701120 its reverse (21107821), we get a palindrome (149808941).

It can be divided in two parts, 128701 and 120, that added together give a palindrome (128821).

The spelling of 128701120 in words is "one hundred twenty-eight million, seven hundred one thousand, one hundred twenty".