124188985 has 8 divisors (see below), whose sum is σ = 151470216. Its totient is φ = 97722240.

The previous prime is 124188979. The next prime is 124189001. The reversal of 124188985 is 589881421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1776889 + 122412096 = 1333^2 + 11064^2 .

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

It is not a de Polignac number, because 124188985 - 2⁹ = 124188473 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 203284 + ... + 203893.

It is an arithmetic number, because the mean of its divisors is an integer number (18933777).

Almost surely, 2^124188985 is an apocalyptic number.

It is an amenable number.

124188985 is a deficient number, since it is larger than the sum of its proper divisors (27281231).

124188985 is an equidigital number, since it uses as much as digits as its factorization.

124188985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407243.

The product of its digits is 184320, while the sum is 46.

The square root of 124188985 is about 11144.0111719255. The cubic root of 124188985 is about 498.9162995503.

The spelling of 124188985 in words is "one hundred twenty-four million, one hundred eighty-eight thousand, nine hundred eighty-five".