128133262 has 4 divisors (see below), whose sum is σ = 192199896. Its totient is φ = 64066630.

The previous prime is 128133251. The next prime is 128133263. The reversal of 128133262 is 262331821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 262331821 = 53 ⋅4949657.

It is a self number, because there is not a number n which added to its sum of digits gives 128133262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128133263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32033314 + ... + 32033317.

It is an arithmetic number, because the mean of its divisors is an integer number (48049974).

Almost surely, 2^128133262 is an apocalyptic number.

128133262 is a deficient number, since it is larger than the sum of its proper divisors (64066634).

128133262 is an equidigital number, since it uses as much as digits as its factorization.

128133262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64066633.

The product of its digits is 3456, while the sum is 28.

The square root of 128133262 is about 11319.5963708959. The cubic root of 128133262 is about 504.1432547135.

It can be divided in two parts, 1281 and 33262, that added together give a palindrome (34543).

The spelling of 128133262 in words is "one hundred twenty-eight million, one hundred thirty-three thousand, two hundred sixty-two".