124103212420 has 96 divisors (see below), whose sum is σ = 291688096896. Its totient is φ = 43960550400.

The previous prime is 124103212411. The next prime is 124103212427. The reversal of 124103212420 is 24212301421.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 124103212391 and 124103212400.

It is not an unprimeable number, because it can be changed into a prime (124103212427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6096379 + ... + 6116701.

It is an arithmetic number, because the mean of its divisors is an integer number (3038417676).

Almost surely, 2^124103212420 is an apocalyptic number.

124103212420 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 124103212420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145844048448).

124103212420 is an abundant number, since it is smaller than the sum of its proper divisors (167584884476).

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

124103212420 is a wasteful number, since it uses less digits than its factorization.

124103212420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21061 (or 21059 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 124103212420 its reverse (24212301421), we get a palindrome (148315513841).

The spelling of 124103212420 in words is "one hundred twenty-four billion, one hundred three million, two hundred twelve thousand, four hundred twenty".