124322430021 has 4 divisors (see below), whose sum is σ = 165763240032. Its totient is φ = 82881620012.

The previous prime is 124322430017. The next prime is 124322430047. The reversal of 124322430021 is 120034223421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 124322430021 - 2² = 124322430017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124322429973 and 124322430000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124322430521) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 20720405001 + ... + 20720405006.

It is an arithmetic number, because the mean of its divisors is an integer number (41440810008).

Almost surely, 2^124322430021 is an apocalyptic number.

It is an amenable number.

124322430021 is a deficient number, since it is larger than the sum of its proper divisors (41440810011).

124322430021 is an equidigital number, since it uses as much as digits as its factorization.

124322430021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41440810010.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 124322430021 its reverse (120034223421), we get a palindrome (244356653442).

The spelling of 124322430021 in words is "one hundred twenty-four billion, three hundred twenty-two million, four hundred thirty thousand, twenty-one".