123602135272 has 64 divisors (see below), whose sum is σ = 289428163200. Its totient is φ = 48075325440.

The previous prime is 123602135269. The next prime is 123602135273. The reversal of 123602135272 is 272531206321.

It is not an unprimeable number, because it can be changed into a prime (123602135273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196104 + ... + 534472.

It is an arithmetic number, because the mean of its divisors is an integer number (4522315050).

Almost surely, 2^123602135272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123602135272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144714081600).

123602135272 is an abundant number, since it is smaller than the sum of its proper divisors (165826027928).

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

123602135272 is a wasteful number, since it uses less digits than its factorization.

123602135272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338986 (or 338982 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 123602135272 in words is "one hundred twenty-three billion, six hundred two million, one hundred thirty-five thousand, two hundred seventy-two".