123734240126 has 48 divisors (see below), whose sum is σ = 219562924752. Its totient is φ = 52131139200.

The previous prime is 123734240117. The next prime is 123734240141. The reversal of 123734240126 is 621042437321.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13726961 + ... + 13735971.

It is an arithmetic number, because the mean of its divisors is an integer number (4574227599).

Almost surely, 2^123734240126 is an apocalyptic number.

123734240126 is a deficient number, since it is larger than the sum of its proper divisors (95828684626).

123734240126 is a wasteful number, since it uses less digits than its factorization.

123734240126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11385 (or 11378 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

Adding to 123734240126 its reverse (621042437321), we get a palindrome (744776677447).

The spelling of 123734240126 in words is "one hundred twenty-three billion, seven hundred thirty-four million, two hundred forty thousand, one hundred twenty-six".