123041240120 has 64 divisors (see below), whose sum is σ = 281895102720. Its totient is φ = 48324363264.

The previous prime is 123041240053. The next prime is 123041240143. The reversal of 123041240120 is 21042140321.

It is a super-2 number, since 2×123041240120² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 123041240092 and 123041240101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556682 + ... + 745638.

It is an arithmetic number, because the mean of its divisors is an integer number (4404610980).

Almost surely, 2^123041240120 is an apocalyptic number.

123041240120 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 123041240120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140947551360).

123041240120 is an abundant number, since it is smaller than the sum of its proper divisors (158853862600).

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

123041240120 is a wasteful number, since it uses less digits than its factorization.

123041240120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189264 (or 189260 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 123041240120 its reverse (21042140321), we get a palindrome (144083380441).

The spelling of 123041240120 in words is "one hundred twenty-three billion, forty-one million, two hundred forty thousand, one hundred twenty".