123102045324120 has 128 divisors (see below), whose sum is σ = 374061439872000. Its totient is φ = 32404697395200.

The previous prime is 123102045324031. The next prime is 123102045324127. The reversal of 123102045324120 is 21423540201321.

It is a happy number.

It is a super-2 number, since 2×123102045324120² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123102045324127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42695496 + ... + 45487464.

It is an arithmetic number, because the mean of its divisors is an integer number (2922354999000).

Almost surely, 2^{123102045324120} is an apocalyptic number.

123102045324120 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 123102045324120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187030719936000).

123102045324120 is an abundant number, since it is smaller than the sum of its proper divisors (250959394547880).

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

123102045324120 is a wasteful number, since it uses less digits than its factorization.

123102045324120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796713 (or 2796709 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 123102045324120 its reverse (21423540201321), we get a palindrome (144525585525441).

The spelling of 123102045324120 in words is "one hundred twenty-three trillion, one hundred two billion, forty-five million, three hundred twenty-four thousand, one hundred twenty".