128117354 has 4 divisors (see below), whose sum is σ = 192176034. Its totient is φ = 64058676.

The previous prime is 128117351. The next prime is 128117357. The reversal of 128117354 is 453711821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 453711821 = 47 ⋅9653443.

It is an interprime number because it is at equal distance from previous prime (128117351) and next prime (128117357).

It can be written as a sum of positive squares in only one way, i.e., 114597025 + 13520329 = 10705^2 + 3677^2 .

It is a super-2 number, since 2×128117354² = 32828112791922632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128117354.

It is not an unprimeable number, because it can be changed into a prime (128117351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32029337 + ... + 32029340.

Almost surely, 2^128117354 is an apocalyptic number.

128117354 is a deficient number, since it is larger than the sum of its proper divisors (64058680).

128117354 is an equidigital number, since it uses as much as digits as its factorization.

128117354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64058679.

The product of its digits is 6720, while the sum is 32.

The square root of 128117354 is about 11318.8936738535. The cubic root of 128117354 is about 504.1223903866.

The spelling of 128117354 in words is "one hundred twenty-eight million, one hundred seventeen thousand, three hundred fifty-four".