123140145175 has 48 divisors (see below), whose sum is σ = 157979888640. Its totient is φ = 95153760000.

The previous prime is 123140145137. The next prime is 123140145179. The reversal of 123140145175 is 571541041321.

It is not a de Polignac number, because 123140145175 - 2⁷ = 123140145047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123140145175.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123140145179) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63115450 + ... + 63117400.

It is an arithmetic number, because the mean of its divisors is an integer number (3291247680).

Almost surely, 2^123140145175 is an apocalyptic number.

123140145175 is a deficient number, since it is larger than the sum of its proper divisors (34839743465).

123140145175 is a wasteful number, since it uses less digits than its factorization.

123140145175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584 (or 2579 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

Adding to 123140145175 its reverse (571541041321), we get a palindrome (694681186496).

The spelling of 123140145175 in words is "one hundred twenty-three billion, one hundred forty million, one hundred forty-five thousand, one hundred seventy-five".