1123424013 has 4 divisors (see below), whose sum is σ = 1497898688. Its totient is φ = 748949340.

The previous prime is 1123424009. The next prime is 1123424047. The reversal of 1123424013 is 3104243211.

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: 3104243211 = 3 ⋅1034747737.

It is not a de Polignac number, because 1123424013 - 2² = 1123424009 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 (1123424713) 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, 187237333 + ... + 187237338.

It is an arithmetic number, because the mean of its divisors is an integer number (374474672).

Almost surely, 2^1123424013 is an apocalyptic number.

It is an amenable number.

1123424013 is a deficient number, since it is larger than the sum of its proper divisors (374474675).

1123424013 is an equidigital number, since it uses as much as digits as its factorization.

1123424013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374474674.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1123424013 is about 33517.5180017853. The cubic root of 1123424013 is about 1039.5560275208.

Adding to 1123424013 its reverse (3104243211), we get a palindrome (4227667224).

The spelling of 1123424013 in words is "one billion, one hundred twenty-three million, four hundred twenty-four thousand, thirteen".