124421455872 has 360 divisors, whose sum is σ = 414043812000. Its totient is φ = 35266756608.

The previous prime is 124421455843. The next prime is 124421455897. The reversal of 124421455872 is 278554124421.

124421455872 is a `hidden beast` number, since 1 + 2 + 4 + 4 + 21 + 4 + 558 + 72 = 666.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153796204 + ... + 153797012.

It is an arithmetic number, because the mean of its divisors is an integer number (1150121700).

Almost surely, 2^124421455872 is an apocalyptic number.

124421455872 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 124421455872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207021906000).

124421455872 is an abundant number, since it is smaller than the sum of its proper divisors (289622356128).

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

124421455872 is an equidigital number, since it uses as much as digits as its factorization.

124421455872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999 (or 970 counting only the distinct ones).

The product of its digits is 716800, while the sum is 45.

The spelling of 124421455872 in words is "one hundred twenty-four billion, four hundred twenty-one million, four hundred fifty-five thousand, eight hundred seventy-two".