128394124 has 12 divisors (see below), whose sum is σ = 230170248. Its totient is φ = 62631200.

The previous prime is 128394113. The next prime is 128394131. The reversal of 128394124 is 421493821.

It is a self number, because there is not a number n which added to its sum of digits gives 128394124.

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, 391282 + ... + 391609.

It is an arithmetic number, because the mean of its divisors is an integer number (19180854).

Almost surely, 2^128394124 is an apocalyptic number.

It is an amenable number.

128394124 is a deficient number, since it is larger than the sum of its proper divisors (101776124).

128394124 is a wasteful number, since it uses less digits than its factorization.

128394124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782936 (or 782934 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 128394124 is about 11331.1130962496. The cubic root of 128394124 is about 504.4851453090.

The spelling of 128394124 in words is "one hundred twenty-eight million, three hundred ninety-four thousand, one hundred twenty-four".