124140412240 has 80 divisors (see below), whose sum is σ = 311192582400. Its totient is φ = 45782770176.

The previous prime is 124140412219. The next prime is 124140412243. The reversal of 124140412240 is 42214041421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×124140412240² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124140412243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 823881 + ... + 962839.

It is an arithmetic number, because the mean of its divisors is an integer number (3889907280).

Almost surely, 2^124140412240 is an apocalyptic number.

124140412240 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 124140412240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155596291200).

124140412240 is an abundant number, since it is smaller than the sum of its proper divisors (187052170160).

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

124140412240 is a wasteful number, since it uses less digits than its factorization.

124140412240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139844 (or 139838 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 124140412240 its reverse (42214041421), we get a palindrome (166354453661).

The spelling of 124140412240 in words is "one hundred twenty-four billion, one hundred forty million, four hundred twelve thousand, two hundred forty".