124355121312 has 96 divisors (see below), whose sum is σ = 346883124672. Its totient is φ = 38872387584.

The previous prime is 124355121307. The next prime is 124355121313. The reversal of 124355121312 is 213121553421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 124355121312.

It is not an unprimeable number, because it can be changed into a prime (124355121313) 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, 314523 + ... + 589605.

It is an arithmetic number, because the mean of its divisors is an integer number (3613365882).

Almost surely, 2^124355121312 is an apocalyptic number.

124355121312 is a gapful number since it is divisible by the number (12) 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 124355121312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173441562336).

124355121312 is an abundant number, since it is smaller than the sum of its proper divisors (222528003360).

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

124355121312 is a wasteful number, since it uses less digits than its factorization.

124355121312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275390 (or 275382 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

Adding to 124355121312 its reverse (213121553421), we get a palindrome (337476674733).

The spelling of 124355121312 in words is "one hundred twenty-four billion, three hundred fifty-five million, one hundred twenty-one thousand, three hundred twelve".