124999985 has 8 divisors (see below), whose sum is σ = 163636416. Its totient is φ = 90909040.

The previous prime is 124999969. The next prime is 124999991. The reversal of 124999985 is 589999421.

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

It is not a de Polignac number, because 124999985 - 2⁴ = 124999969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124999985.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1136309 + ... + 1136418.

It is an arithmetic number, because the mean of its divisors is an integer number (20454552).

Almost surely, 2^124999985 is an apocalyptic number.

It is an amenable number.

124999985 is a deficient number, since it is larger than the sum of its proper divisors (38636431).

124999985 is a wasteful number, since it uses less digits than its factorization.

124999985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272743.

The product of its digits is 2099520, while the sum is 56.

The square root of 124999985 is about 11180.3392166785. The cubic root of 124999985 is about 499.9999800000. Note that the first 4 decimals are identical.

The spelling of 124999985 in words is "one hundred twenty-four million, nine hundred ninety-nine thousand, nine hundred eighty-five".