124003421111 has 4 divisors (see below), whose sum is σ = 124005191832. Its totient is φ = 124001650392.

The previous prime is 124003421099. The next prime is 124003421149. The reversal of 124003421111 is 111124300421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111124300421 = 59 ⋅1883462719.

It is a cyclic number.

It is not a de Polignac number, because 124003421111 - 2³⁴ = 106823551927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124003420111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775796 + ... + 921881.

It is an arithmetic number, because the mean of its divisors is an integer number (31001297958).

Almost surely, 2^124003421111 is an apocalyptic number.

124003421111 is a deficient number, since it is larger than the sum of its proper divisors (1770721).

124003421111 is an equidigital number, since it uses as much as digits as its factorization.

124003421111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770720.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 124003421111 its reverse (111124300421), we get a palindrome (235127721532).

The spelling of 124003421111 in words is "one hundred twenty-four billion, three million, four hundred twenty-one thousand, one hundred eleven".