124143541121 has 4 divisors (see below), whose sum is σ = 124194484692. Its totient is φ = 124092597552.

The previous prime is 124143541099. The next prime is 124143541169. The reversal of 124143541121 is 121145341421.

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 119373705025 + 4769836096 = 345505^2 + 69064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124143541121 is a prime.

It is a super-2 number, since 2×124143541121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124143541421) 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, 25468130 + ... + 25473003.

It is an arithmetic number, because the mean of its divisors is an integer number (31048621173).

Almost surely, 2^124143541121 is an apocalyptic number.

It is an amenable number.

124143541121 is a deficient number, since it is larger than the sum of its proper divisors (50943571).

124143541121 is an equidigital number, since it uses as much as digits as its factorization.

124143541121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50943570.

The product of its digits is 3840, while the sum is 29.

Adding to 124143541121 its reverse (121145341421), we get a palindrome (245288882542).

The spelling of 124143541121 in words is "one hundred twenty-four billion, one hundred forty-three million, five hundred forty-one thousand, one hundred twenty-one".