124003401021 has 12 divisors (see below), whose sum is σ = 179124093148. Its totient is φ = 82665209664.

The previous prime is 124003401001. The next prime is 124003401023. The reversal of 124003401021 is 120104300421.

124003401021 is a `hidden beast` number, since 1 + 240 + 0 + 3 + 401 + 0 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 115277225625 + 8726175396 = 339525^2 + 93414^2 .

It is not a de Polignac number, because 124003401021 - 2¹³ = 124003392829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124003400985 and 124003401003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124003401023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91360 + ... + 506313.

Almost surely, 2^124003401021 is an apocalyptic number.

It is an amenable number.

124003401021 is a deficient number, since it is larger than the sum of its proper divisors (55120692127).

124003401021 is a wasteful number, since it uses less digits than its factorization.

124003401021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620732 (or 620729 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 124003401021 its reverse (120104300421), we get a palindrome (244107701442).

The spelling of 124003401021 in words is "one hundred twenty-four billion, three million, four hundred one thousand, twenty-one".