124644446421 has 16 divisors (see below), whose sum is σ = 183170100288. Its totient is φ = 74763302400.

The previous prime is 124644446419. The next prime is 124644446461.

124644446421 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 124644446421 - 2¹ = 124644446419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124644446461) 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 15 ways as a sum of consecutive naturals, for example, 19466410 + ... + 19472811.

It is an arithmetic number, because the mean of its divisors is an integer number (11448131268).

Almost surely, 2^124644446421 is an apocalyptic number.

124644446421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

124644446421 is a deficient number, since it is larger than the sum of its proper divisors (58525653867).

124644446421 is a wasteful number, since it uses less digits than its factorization.

124644446421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38939332.

The product of its digits is 589824, while the sum is 42.

The spelling of 124644446421 in words is "one hundred twenty-four billion, six hundred forty-four million, four hundred forty-six thousand, four hundred twenty-one".