124985117 has 4 divisors (see below), whose sum is σ = 125036700. Its totient is φ = 124933536.

The previous prime is 124985111. The next prime is 124985123. The reversal of 124985117 is 711589421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 711589421 = 5179 ⋅137399.

It is an interprime number because it is at equal distance from previous prime (124985111) and next prime (124985123).

It can be written as a sum of positive squares in 2 ways, for example, as 73633561 + 51351556 = 8581^2 + 7166^2 .

It is a cyclic number.

It is not a de Polignac number, because 124985117 - 2⁴ = 124985101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124985111) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 21968 + ... + 27065.

It is an arithmetic number, because the mean of its divisors is an integer number (31259175).

Almost surely, 2^124985117 is an apocalyptic number.

It is an amenable number.

124985117 is a deficient number, since it is larger than the sum of its proper divisors (51583).

124985117 is an equidigital number, since it uses as much as digits as its factorization.

124985117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51582.

The product of its digits is 20160, while the sum is 38.

The square root of 124985117 is about 11179.6742796917. The cubic root of 124985117 is about 499.9801552124.

The spelling of 124985117 in words is "one hundred twenty-four million, nine hundred eighty-five thousand, one hundred seventeen".