1123413043 has 4 divisors (see below), whose sum is σ = 1123553088. Its totient is φ = 1123273000.

The previous prime is 1123413037. The next prime is 1123413073. The reversal of 1123413043 is 3403143211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3403143211 = 13 ⋅261780247.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123413043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123413013) 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, 57208 + ... + 74293.

It is an arithmetic number, because the mean of its divisors is an integer number (280888272).

Almost surely, 2^1123413043 is an apocalyptic number.

1123413043 is a deficient number, since it is larger than the sum of its proper divisors (140045).

1123413043 is an equidigital number, since it uses as much as digits as its factorization.

1123413043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140044.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1123413043 is about 33517.3543556170. The cubic root of 1123413043 is about 1039.5526438275.

Adding to 1123413043 its reverse (3403143211), we get a palindrome (4526556254).

The spelling of 1123413043 in words is "one billion, one hundred twenty-three million, four hundred thirteen thousand, forty-three".