128754427 has 8 divisors (see below), whose sum is σ = 132088880. Its totient is φ = 125435520.

The previous prime is 128754401. The next prime is 128754433. The reversal of 128754427 is 724457821.

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 128754427 - 2¹⁹ = 128230139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128754427.

It is not an unprimeable number, because it can be changed into a prime (128754467) 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, 13927 + ... + 21247.

It is an arithmetic number, because the mean of its divisors is an integer number (16511110).

Almost surely, 2^128754427 is an apocalyptic number.

128754427 is a deficient number, since it is larger than the sum of its proper divisors (3334453).

128754427 is an equidigital number, since it uses as much as digits as its factorization.

128754427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7773.

The product of its digits is 125440, while the sum is 40.

The square root of 128754427 is about 11347.0007931612. Note that the first 3 decimals coincide. The cubic root of 128754427 is about 504.9566044467.

The spelling of 128754427 in words is "one hundred twenty-eight million, seven hundred fifty-four thousand, four hundred twenty-seven".