124324721673 has 4 divisors (see below), whose sum is σ = 165766295568. Its totient is φ = 82883147780.

The previous prime is 124324721641. The next prime is 124324721737. The reversal of 124324721673 is 376127423421.

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 124324721673 - 2⁵ = 124324721641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (124324721273) 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 3 ways as a sum of consecutive naturals, for example, 20720786943 + ... + 20720786948.

It is an arithmetic number, because the mean of its divisors is an integer number (41441573892).

Almost surely, 2^124324721673 is an apocalyptic number.

It is an amenable number.

124324721673 is a deficient number, since it is larger than the sum of its proper divisors (41441573895).

124324721673 is an equidigital number, since it uses as much as digits as its factorization.

124324721673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41441573894.

The product of its digits is 338688, while the sum is 42.

The spelling of 124324721673 in words is "one hundred twenty-four billion, three hundred twenty-four million, seven hundred twenty-one thousand, six hundred seventy-three".