124122321240 has 128 divisors (see below), whose sum is σ = 377489548800. Its totient is φ = 32646528000.

The previous prime is 124122321163. The next prime is 124122321241. The reversal of 124122321240 is 42123221421.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 124122321240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124122321241) 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, 3082356 + ... + 3122364.

It is an arithmetic number, because the mean of its divisors is an integer number (2949137100).

Almost surely, 2^124122321240 is an apocalyptic number.

124122321240 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 124122321240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188744774400).

124122321240 is an abundant number, since it is smaller than the sum of its proper divisors (253367227560).

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

124122321240 is a wasteful number, since it uses less digits than its factorization.

124122321240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40377 (or 40373 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 124122321240 its reverse (42123221421), we get a palindrome (166245542661).

The spelling of 124122321240 in words is "one hundred twenty-four billion, one hundred twenty-two million, three hundred twenty-one thousand, two hundred forty".