128459323 has 12 divisors (see below), whose sum is σ = 136035288. Its totient is φ = 121286880.

The previous prime is 128459321. The next prime is 128459329. The reversal of 128459323 is 323954821.

It is not a de Polignac number, because 128459323 - 2¹ = 128459321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128459321) 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 in 11 ways as a sum of consecutive naturals, for example, 187740 + ... + 188422.

It is an arithmetic number, because the mean of its divisors is an integer number (11336274).

Almost surely, 2^128459323 is an apocalyptic number.

128459323 is a deficient number, since it is larger than the sum of its proper divisors (7575965).

128459323 is an equidigital number, since it uses as much as digits as its factorization.

128459323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242 (or 1223 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 128459323 is about 11333.9897211882. The cubic root of 128459323 is about 504.5705239852.

The spelling of 128459323 in words is "one hundred twenty-eight million, four hundred fifty-nine thousand, three hundred twenty-three".