124112789 has 4 divisors (see below), whose sum is σ = 124934880. Its totient is φ = 123290700.

The previous prime is 124112783. The next prime is 124112819. The reversal of 124112789 is 987211421.

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, and also an emirpimes, since its reverse is a distinct semiprime: 987211421 = 7 ⋅141030203.

It is a cyclic number.

It is not a de Polignac number, because 124112789 - 2⁴ = 124112773 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 (124112783) 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, 410819 + ... + 411120.

It is an arithmetic number, because the mean of its divisors is an integer number (31233720).

Almost surely, 2^124112789 is an apocalyptic number.

It is an amenable number.

124112789 is a deficient number, since it is larger than the sum of its proper divisors (822091).

124112789 is an equidigital number, since it uses as much as digits as its factorization.

124112789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822090.

The product of its digits is 8064, while the sum is 35.

The square root of 124112789 is about 11140.5919501614. The cubic root of 124112789 is about 498.8142421797.

The spelling of 124112789 in words is "one hundred twenty-four million, one hundred twelve thousand, seven hundred eighty-nine".