124431320020 has 48 divisors (see below), whose sum is σ = 298710679680. Its totient is φ = 42651379584.

The previous prime is 124431319997. The next prime is 124431320051. The reversal of 124431320020 is 20023134421.

It is a junction number, because it is equal to n+sod(n) for n = 124431319973 and 124431320000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453426 + ... + 674134.

It is an arithmetic number, because the mean of its divisors is an integer number (6223139160).

Almost surely, 2^124431320020 is an apocalyptic number.

124431320020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124431320020 is an abundant number, since it is smaller than the sum of its proper divisors (174279359660).

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

124431320020 is a wasteful number, since it uses less digits than its factorization.

124431320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224752 (or 224750 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 124431320020 its reverse (20023134421), we get a palindrome (144454454441).

The spelling of 124431320020 in words is "one hundred twenty-four billion, four hundred thirty-one million, three hundred twenty thousand, twenty".