124001821380 has 48 divisors (see below), whose sum is σ = 347236767360. Its totient is φ = 33064136448.

The previous prime is 124001821319. The next prime is 124001821403. The reversal of 124001821380 is 83128100421.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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, 612937 + ... + 789743.

It is an arithmetic number, because the mean of its divisors is an integer number (7234099320).

Almost surely, 2^124001821380 is an apocalyptic number.

124001821380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124001821380 is an abundant number, since it is smaller than the sum of its proper divisors (223234945980).

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

124001821380 is a wasteful number, since it uses less digits than its factorization.

124001821380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188508 (or 188506 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The spelling of 124001821380 in words is "one hundred twenty-four billion, one million, eight hundred twenty-one thousand, three hundred eighty".