124978985 has 16 divisors (see below), whose sum is σ = 159481872. Its totient is φ = 93696000.

The previous prime is 124978963. The next prime is 124978991. The reversal of 124978985 is 589879421.

It can be written as a sum of positive squares in 8 ways, for example, as 9265936 + 115713049 = 3044^2 + 10757^2 .

It is not a de Polignac number, because 124978985 - 2⁸ = 124978729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17435 + ... + 23535.

It is an arithmetic number, because the mean of its divisors is an integer number (9967617).

Almost surely, 2^124978985 is an apocalyptic number.

It is an amenable number.

124978985 is a deficient number, since it is larger than the sum of its proper divisors (34502887).

124978985 is a wasteful number, since it uses less digits than its factorization.

124978985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6364.

The product of its digits is 1451520, while the sum is 53.

The square root of 124978985 is about 11179.4000286241. The cubic root of 124978985 is about 499.9719784296.

The spelling of 124978985 in words is "one hundred twenty-four million, nine hundred seventy-eight thousand, nine hundred eighty-five".