128117467 has 8 divisors (see below), whose sum is σ = 130422096. Its totient is φ = 125824512.

The previous prime is 128117449. The next prime is 128117489. The reversal of 128117467 is 764711821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128117467 - 2¹⁵ = 128084699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128117267) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20943 + ... + 26359.

It is an arithmetic number, because the mean of its divisors is an integer number (16302762).

Almost surely, 2^128117467 is an apocalyptic number.

128117467 is a deficient number, since it is larger than the sum of its proper divisors (2304629).

128117467 is an equidigital number, since it uses as much as digits as its factorization.

128117467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5837.

The product of its digits is 18816, while the sum is 37.

The square root of 128117467 is about 11318.8986655063. The cubic root of 128117467 is about 504.1225385992.

The spelling of 128117467 in words is "one hundred twenty-eight million, one hundred seventeen thousand, four hundred sixty-seven".