128494 has 8 divisors (see below), whose sum is σ = 197568. Its totient is φ = 62640.

The previous prime is 128489. The next prime is 128509. The reversal of 128494 is 494821.

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

It is a super-3 number, since 3×128494³ = 6364580755133352, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702 + ... + 865.

It is an arithmetic number, because the mean of its divisors is an integer number (24696).

2¹²⁸⁴⁹⁴ is an apocalyptic number.

128494 is a deficient number, since it is larger than the sum of its proper divisors (69074).

128494 is a wasteful number, since it uses less digits than its factorization.

128494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610.

The product of its digits is 2304, while the sum is 28.

The square root of 128494 is about 358.4605975557. The cubic root of 128494 is about 50.4615922060.

It can be divided in two parts, 1284 and 94, that added together give a triangular number (1378 = T₅₂).

The spelling of 128494 in words is "one hundred twenty-eight thousand, four hundred ninety-four".