124116581 has 4 divisors (see below), whose sum is σ = 124212000. Its totient is φ = 124021164.

The previous prime is 124116547. The next prime is 124116583. The reversal of 124116581 is 185611421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124116581 is a prime.

It is a super-2 number, since 2×124116581² = 30809851358259122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124116583) 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, 45731 + ... + 48368.

It is an arithmetic number, because the mean of its divisors is an integer number (31053000).

Almost surely, 2^124116581 is an apocalyptic number.

It is an amenable number.

124116581 is a deficient number, since it is larger than the sum of its proper divisors (95419).

124116581 is an equidigital number, since it uses as much as digits as its factorization.

124116581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95418.

The product of its digits is 1920, while the sum is 29.

The square root of 124116581 is about 11140.7621373046. The cubic root of 124116581 is about 498.8193221943.

The spelling of 124116581 in words is "one hundred twenty-four million, one hundred sixteen thousand, five hundred eighty-one".