123020532144 has 120 divisors (see below), whose sum is σ = 360886558032. Its totient is φ = 39076208640.

The previous prime is 123020532127. The next prime is 123020532149. The reversal of 123020532144 is 441235020321.

123020532144 is a `hidden beast` number, since 123 + 0 + 2 + 0 + 532 + 1 + 4 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (123020532149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11584 + ... + 496160.

Almost surely, 2^123020532144 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 123020532144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180443279016).

123020532144 is an abundant number, since it is smaller than the sum of its proper divisors (237866025888).

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

123020532144 is a wasteful number, since it uses less digits than its factorization.

123020532144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484675 (or 484666 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 123020532144 its reverse (441235020321), we get a palindrome (564255552465).

The spelling of 123020532144 in words is "one hundred twenty-three billion, twenty million, five hundred thirty-two thousand, one hundred forty-four".