128542894 has 8 divisors (see below), whose sum is σ = 193793688. Its totient is φ = 63945000.

The previous prime is 128542871. The next prime is 128542907. The reversal of 128542894 is 498245821.

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

It is a self number, because there is not a number n which added to its sum of digits gives 128542894.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162732 + ... + 163519.

It is an arithmetic number, because the mean of its divisors is an integer number (24224211).

Almost surely, 2^128542894 is an apocalyptic number.

128542894 is a deficient number, since it is larger than the sum of its proper divisors (65250794).

128542894 is a wasteful number, since it uses less digits than its factorization.

128542894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326450.

The product of its digits is 184320, while the sum is 43.

The square root of 128542894 is about 11337.6758641267. The cubic root of 128542894 is about 504.6799187243.

The spelling of 128542894 in words is "one hundred twenty-eight million, five hundred forty-two thousand, eight hundred ninety-four".