124040343040 has 80 divisors (see below), whose sum is σ = 297810947808. Its totient is φ = 49548599296.

The previous prime is 124040343023. The next prime is 124040343047. The reversal of 124040343040 is 40343040421.

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

It is a junction number, because it is equal to n+sod(n) for n = 124040342996 and 124040343014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124040343047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1869474 + ... + 1934686.

Almost surely, 2^124040343040 is an apocalyptic number.

124040343040 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 124040343040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148905473904).

124040343040 is an abundant number, since it is smaller than the sum of its proper divisors (173770604768).

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

124040343040 is an frugal number, since it uses more digits than its factorization.

124040343040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65979 (or 65963 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 124040343040 its reverse (40343040421), we get a palindrome (164383383461).

The spelling of 124040343040 in words is "one hundred twenty-four billion, forty million, three hundred forty-three thousand, forty".