124220547640 has 384 divisors, whose sum is σ = 360258969600. Its totient is φ = 37672750080.

The previous prime is 124220547623. The next prime is 124220547641. The reversal of 124220547640 is 46745022421.

It is a self number, because there is not a number n which added to its sum of digits gives 124220547640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124220547641) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 90870237 + ... + 90871603.

It is an arithmetic number, because the mean of its divisors is an integer number (938174400).

Almost surely, 2^124220547640 is an apocalyptic number.

124220547640 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 124220547640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180129484800).

124220547640 is an abundant number, since it is smaller than the sum of its proper divisors (236038421960).

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

124220547640 is a wasteful number, since it uses less digits than its factorization.

124220547640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483 (or 1460 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 37.

The spelling of 124220547640 in words is "one hundred twenty-four billion, two hundred twenty million, five hundred forty-seven thousand, six hundred forty".