124404132009 has 4 divisors (see below), whose sum is σ = 165872176016. Its totient is φ = 82936088004.

The previous prime is 124404132001. The next prime is 124404132031. The reversal of 124404132009 is 900231404421.

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: 900231404421 = 3 ⋅300077134807.

It is not a de Polignac number, because 124404132009 - 2³ = 124404132001 is a prime.

It is a super-4 number, since 4×124404132009⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124404132001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20734021999 + ... + 20734022004.

It is an arithmetic number, because the mean of its divisors is an integer number (41468044004).

Almost surely, 2^124404132009 is an apocalyptic number.

It is an amenable number.

124404132009 is a deficient number, since it is larger than the sum of its proper divisors (41468044007).

124404132009 is an equidigital number, since it uses as much as digits as its factorization.

124404132009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41468044006.

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 124404132009 in words is "one hundred twenty-four billion, four hundred four million, one hundred thirty-two thousand, nine".