124134243421 has 4 divisors (see below), whose sum is σ = 124138995552. Its totient is φ = 124129491292.

The previous prime is 124134243407. The next prime is 124134243433. The reversal of 124134243421 is 124342431421.

It is a happy number.

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 not a de Polignac number, because 124134243421 - 2²⁵ = 124100688989 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 (124134241421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2336665 + ... + 2389198.

It is an arithmetic number, because the mean of its divisors is an integer number (31034748888).

Almost surely, 2^124134243421 is an apocalyptic number.

It is an amenable number.

124134243421 is a deficient number, since it is larger than the sum of its proper divisors (4752131).

124134243421 is an equidigital number, since it uses as much as digits as its factorization.

124134243421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4752130.

The product of its digits is 18432, while the sum is 31.

Adding to 124134243421 its reverse (124342431421), we get a palindrome (248476674842).

The spelling of 124134243421 in words is "one hundred twenty-four billion, one hundred thirty-four million, two hundred forty-three thousand, four hundred twenty-one".