128054742 has 8 divisors (see below), whose sum is σ = 256109496. Its totient is φ = 42684912.

The previous prime is 128054681. The next prime is 128054753. The reversal of 128054742 is 247450821.

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

128054742 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 10671223 + ... + 10671234.

It is an arithmetic number, because the mean of its divisors is an integer number (32013687).

Almost surely, 2^128054742 is an apocalyptic number.

128054742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128054742 is a wasteful number, since it uses less digits than its factorization.

128054742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21342462.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 128054742 is about 11316.1275178393. The cubic root of 128054742 is about 504.0402540915.

The spelling of 128054742 in words is "one hundred twenty-eight million, fifty-four thousand, seven hundred forty-two".