123302134323240 has 256 divisors, whose sum is σ = 386361635788800. Its totient is φ = 31420657382400.

The previous prime is 123302134323161. The next prime is 123302134323253. The reversal of 123302134323240 is 42323431203321.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16637715135 + ... + 16637722545.

It is an arithmetic number, because the mean of its divisors is an integer number (1509225139800).

Almost surely, 2^{123302134323240} is an apocalyptic number.

123302134323240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123302134323240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193180817894400).

123302134323240 is an abundant number, since it is smaller than the sum of its proper divisors (263059501465560).

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

123302134323240 is a wasteful number, since it uses less digits than its factorization.

123302134323240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12448 (or 12444 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 33.

Adding to 123302134323240 its reverse (42323431203321), we get a palindrome (165625565526561).

The spelling of 123302134323240 in words is "one hundred twenty-three trillion, three hundred two billion, one hundred thirty-four million, three hundred twenty-three thousand, two hundred forty".