124340123 has 4 divisors (see below), whose sum is σ = 130884360. Its totient is φ = 117795888.

The previous prime is 124340119. The next prime is 124340131. The reversal of 124340123 is 321043421.

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

It is a cyclic number.

It is not a de Polignac number, because 124340123 - 2² = 124340119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124340095 and 124340104.

It is not an unprimeable number, because it can be changed into a prime (124340113) 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, 3272090 + ... + 3272127.

It is an arithmetic number, because the mean of its divisors is an integer number (32721090).

Almost surely, 2^124340123 is an apocalyptic number.

124340123 is a deficient number, since it is larger than the sum of its proper divisors (6544237).

124340123 is an equidigital number, since it uses as much as digits as its factorization.

124340123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6544236.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 124340123 is about 11150.7902410547. The cubic root of 124340123 is about 499.1186112206.

Adding to 124340123 its reverse (321043421), we get a palindrome (445383544).

The spelling of 124340123 in words is "one hundred twenty-four million, three hundred forty thousand, one hundred twenty-three".