128512234 has 4 divisors (see below), whose sum is σ = 192768354. Its totient is φ = 64256116.

The previous prime is 128512229. The next prime is 128512271. The reversal of 128512234 is 432215821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 116575209 + 11937025 = 10797^2 + 3455^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32128057 + ... + 32128060.

Almost surely, 2^128512234 is an apocalyptic number.

128512234 is a deficient number, since it is larger than the sum of its proper divisors (64256120).

128512234 is an equidigital number, since it uses as much as digits as its factorization.

128512234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64256119.

The product of its digits is 3840, while the sum is 28.

The square root of 128512234 is about 11336.3236545187. The cubic root of 128512234 is about 504.6397901824.

The spelling of 128512234 in words is "one hundred twenty-eight million, five hundred twelve thousand, two hundred thirty-four".