1123729433 has 2 divisors, whose sum is σ = 1123729434. Its totient is φ = 1123729432.

The previous prime is 1123729403. The next prime is 1123729441. The reversal of 1123729433 is 3349273211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 814075024 + 309654409 = 28532^2 + 17597^2 .

It is an emirp because it is prime and its reverse (3349273211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123729433 - 2⁸ = 1123729177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1123729393 and 1123729402.

It is not a weakly prime, because it can be changed into another prime (1123729403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561864716 + 561864717.

It is an arithmetic number, because the mean of its divisors is an integer number (561864717).

Almost surely, 2^1123729433 is an apocalyptic number.

It is an amenable number.

1123729433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123729433 is an equidigital number, since it uses as much as digits as its factorization.

1123729433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 35.

The square root of 1123729433 is about 33522.0738171134. The cubic root of 1123729433 is about 1039.6502253867.

The spelling of 1123729433 in words is "one billion, one hundred twenty-three million, seven hundred twenty-nine thousand, four hundred thirty-three".