124045445209 has 4 divisors (see below), whose sum is σ = 141766223104. Its totient is φ = 106324667316.

The previous prime is 124045445087. The next prime is 124045445213. The reversal of 124045445209 is 902544540421.

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: 902544540421 = 63841 ⋅14137381.

It is not a de Polignac number, because 124045445209 - 2⁷ = 124045445081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124045445219) 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, 8860388937 + ... + 8860388950.

It is an arithmetic number, because the mean of its divisors is an integer number (35441555776).

Almost surely, 2^124045445209 is an apocalyptic number.

It is an amenable number.

124045445209 is a deficient number, since it is larger than the sum of its proper divisors (17720777895).

124045445209 is an equidigital number, since it uses as much as digits as its factorization.

124045445209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17720777894.

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 124045445209 in words is "one hundred twenty-four billion, forty-five million, four hundred forty-five thousand, two hundred nine".