123155140144 has 20 divisors (see below), whose sum is σ = 238780811296. Its totient is φ = 61534285632.

The previous prime is 123155140111. The next prime is 123155140181. The reversal of 123155140144 is 441041551321.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2681799 + ... + 2727334.

Almost surely, 2^123155140144 is an apocalyptic number.

It is an amenable number.

123155140144 is a deficient number, since it is larger than the sum of its proper divisors (115625671152).

123155140144 is a wasteful number, since it uses less digits than its factorization.

123155140144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5410564 (or 5410558 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 123155140144 its reverse (441041551321), we get a palindrome (564196691465).

The spelling of 123155140144 in words is "one hundred twenty-three billion, one hundred fifty-five million, one hundred forty thousand, one hundred forty-four".