128752119 has 24 divisors (see below), whose sum is σ = 196446320. Its totient is φ = 83282256.

The previous prime is 128752109. The next prime is 128752123. The reversal of 128752119 is 911257821.

It is a happy number.

128752119 is a `hidden beast` number, since 128 + 7 + 521 + 1 + 9 = 666.

It is not a de Polignac number, because 128752119 - 2⁴ = 128752103 is a prime.

It is a super-2 number, since 2×128752119² = 33154216293980322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128752109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 358462 + ... + 358820.

Almost surely, 2^128752119 is an apocalyptic number.

128752119 is a deficient number, since it is larger than the sum of its proper divisors (67694201).

128752119 is an frugal number, since it uses more digits than its factorization.

128752119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764 (or 399 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 128752119 is about 11346.8990918224. The cubic root of 128752119 is about 504.9535872125.

It can be divided in two parts, 1287 and 52119, that multiplied together give a triangular number (67077153 = T₁₁₅₈₂).

The spelling of 128752119 in words is "one hundred twenty-eight million, seven hundred fifty-two thousand, one hundred nineteen".