124342123431 has 4 divisors (see below), whose sum is σ = 165789497912. Its totient is φ = 82894748952.

The previous prime is 124342123387. The next prime is 124342123439. The reversal of 124342123431 is 134321243421.

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

It is not a de Polignac number, because 124342123431 - 2⁷ = 124342123303 is a prime.

It is a super-2 number, since 2×124342123431² (a number of 23 digits) 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 (124342123439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20723687236 + ... + 20723687241.

It is an arithmetic number, because the mean of its divisors is an integer number (41447374478).

Almost surely, 2^124342123431 is an apocalyptic number.

124342123431 is a deficient number, since it is larger than the sum of its proper divisors (41447374481).

124342123431 is an equidigital number, since it uses as much as digits as its factorization.

124342123431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41447374480.

The product of its digits is 13824, while the sum is 30.

Adding to 124342123431 its reverse (134321243421), we get a palindrome (258663366852).

The spelling of 124342123431 in words is "one hundred twenty-four billion, three hundred forty-two million, one hundred twenty-three thousand, four hundred thirty-one".