128683542 has 64 divisors (see below), whose sum is σ = 301271040. Its totient is φ = 36288000.

The previous prime is 128683519. The next prime is 128683553. The reversal of 128683542 is 245386821.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 128683542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44542 + ... + 47342.

It is an arithmetic number, because the mean of its divisors is an integer number (4707360).

Almost surely, 2^128683542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128683542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150635520).

128683542 is an abundant number, since it is smaller than the sum of its proper divisors (172587498).

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

128683542 is a wasteful number, since it uses less digits than its factorization.

128683542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2869.

The product of its digits is 92160, while the sum is 39.

The square root of 128683542 is about 11343.8768505304. The cubic root of 128683542 is about 504.8639204631.

The spelling of 128683542 in words is "one hundred twenty-eight million, six hundred eighty-three thousand, five hundred forty-two".