124117013 has 4 divisors (see below), whose sum is σ = 128396940. Its totient is φ = 119837088.

The previous prime is 124117001. The next prime is 124117027. The reversal of 124117013 is 310711421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45670564 + 78446449 = 6758^2 + 8857^2 .

It is a cyclic number.

It is not a de Polignac number, because 124117013 - 2⁸ = 124116757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124117033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2139920 + ... + 2139977.

It is an arithmetic number, because the mean of its divisors is an integer number (32099235).

Almost surely, 2^124117013 is an apocalyptic number.

It is an amenable number.

124117013 is a deficient number, since it is larger than the sum of its proper divisors (4279927).

124117013 is an equidigital number, since it uses as much as digits as its factorization.

124117013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4279926.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 124117013 is about 11140.7815255484. The cubic root of 124117013 is about 498.8199009236.

Adding to 124117013 its reverse (310711421), we get a palindrome (434828434).

The spelling of 124117013 in words is "one hundred twenty-four million, one hundred seventeen thousand, thirteen".