128146045 has 4 divisors (see below), whose sum is σ = 153775260. Its totient is φ = 102516832.

The previous prime is 128146037. The next prime is 128146093. The reversal of 128146045 is 540641821.

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

It can be written as a sum of positive squares in 2 ways, for example, as 75307684 + 52838361 = 8678^2 + 7269^2 .

It is a cyclic number.

It is not a de Polignac number, because 128146045 - 2³ = 128146037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128145998 and 128146016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12814600 + ... + 12814609.

It is an arithmetic number, because the mean of its divisors is an integer number (38443815).

Almost surely, 2^128146045 is an apocalyptic number.

It is an amenable number.

128146045 is a deficient number, since it is larger than the sum of its proper divisors (25629215).

128146045 is an equidigital number, since it uses as much as digits as its factorization.

128146045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25629214.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 128146045 is about 11320.1609970883. The cubic root of 128146045 is about 504.1600191582.

Adding to 128146045 its reverse (540641821), we get a palindrome (668787866).

The spelling of 128146045 in words is "one hundred twenty-eight million, one hundred forty-six thousand, forty-five".