1123504423 has 4 divisors (see below), whose sum is σ = 1127094208. Its totient is φ = 1119914640.

The previous prime is 1123504411. The next prime is 1123504433. The reversal of 1123504423 is 3244053211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1123504423 - 2¹⁷ = 1123373351 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 (1123504433) 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, 1794423 + ... + 1795048.

It is an arithmetic number, because the mean of its divisors is an integer number (281773552).

Almost surely, 2^1123504423 is an apocalyptic number.

1123504423 is a deficient number, since it is larger than the sum of its proper divisors (3589785).

1123504423 is an equidigital number, since it uses as much as digits as its factorization.

1123504423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3589784.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1123504423 is about 33518.7175023150. The cubic root of 1123504423 is about 1039.5808292890.

Adding to 1123504423 its reverse (3244053211), we get a palindrome (4367557634).

The spelling of 1123504423 in words is "one billion, one hundred twenty-three million, five hundred four thousand, four hundred twenty-three".