124217977920 has 224 divisors, whose sum is σ = 396899343360. Its totient is φ = 32915036160.

The previous prime is 124217977903. The next prime is 124217977969. The reversal of 124217977920 is 29779712421.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168088911 + ... + 168089649.

Almost surely, 2^124217977920 is an apocalyptic number.

124217977920 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 124217977920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198449671680).

124217977920 is an abundant number, since it is smaller than the sum of its proper divisors (272681365440).

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

124217977920 is a wasteful number, since it uses less digits than its factorization.

124217977920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633 (or 1623 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 51.

The spelling of 124217977920 in words is "one hundred twenty-four billion, two hundred seventeen million, nine hundred seventy-seven thousand, nine hundred twenty".