128107235 has 4 divisors (see below), whose sum is σ = 153728688. Its totient is φ = 102485784.

The previous prime is 128107219. The next prime is 128107241. The reversal of 128107235 is 532701821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 532701821 = 241 ⋅2210381.

It is a cyclic number.

It is not a de Polignac number, because 128107235 - 2⁴ = 128107219 is a prime.

It is a super-2 number, since 2×128107235² = 32822927318690450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128107198 and 128107207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12810719 + ... + 12810728.

It is an arithmetic number, because the mean of its divisors is an integer number (38432172).

Almost surely, 2^128107235 is an apocalyptic number.

128107235 is a deficient number, since it is larger than the sum of its proper divisors (25621453).

128107235 is an equidigital number, since it uses as much as digits as its factorization.

128107235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25621452.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 128107235 is about 11318.4466690443. The cubic root of 128107235 is about 504.1091177928.

The spelling of 128107235 in words is "one hundred twenty-eight million, one hundred seven thousand, two hundred thirty-five".