43123049 has 2 divisors, whose sum is σ = 43123050. Its totient is φ = 43123048.

The previous prime is 43123043. The next prime is 43123051. The reversal of 43123049 is 94032134.

43123049 is nontrivially palindromic in base 13.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37515625 + 5607424 = 6125^2 + 2368^2 .

It is a cyclic number.

It is not a de Polignac number, because 43123049 - 2¹⁶ = 43057513 is a prime.

It is a Sophie Germain prime.

Together with 43123051, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (43123043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21561524 + 21561525.

It is an arithmetic number, because the mean of its divisors is an integer number (21561525).

Almost surely, 2^43123049 is an apocalyptic number.

It is an amenable number.

43123049 is a deficient number, since it is larger than the sum of its proper divisors (1).

43123049 is an equidigital number, since it uses as much as digits as its factorization.

43123049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 43123049 is about 6566.8142200004. The cubic root of 43123049 is about 350.6736657888.

The spelling of 43123049 in words is "forty-three million, one hundred twenty-three thousand, forty-nine".