123243130132240 has 40 divisors (see below), whose sum is σ = 286540772413248. Its totient is φ = 49297166916480.

The previous prime is 123243130132219. The next prime is 123243130132259. The reversal of 123243130132240 is 42231031342321.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67229259 + ... + 69038101.

Almost surely, 2^{123243130132240} is an apocalyptic number.

123243130132240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123243130132240 is an abundant number, since it is smaller than the sum of its proper divisors (163297642281008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123243130132240 is a wasteful number, since it uses less digits than its factorization.

123243130132240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660527 (or 2660521 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 123243130132240 its reverse (42231031342321), we get a palindrome (165474161474561).

The spelling of 123243130132240 in words is "one hundred twenty-three trillion, two hundred forty-three billion, one hundred thirty million, one hundred thirty-two thousand, two hundred forty".