43124036720129 has 2 divisors, whose sum is σ = 43124036720130. Its totient is φ = 43124036720128.

The previous prime is 43124036720119. The next prime is 43124036720153. The reversal of 43124036720129 is 92102763042134.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43081041868225 + 42994851904 = 6563615^2 + 207352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43124036720129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43124036720129.

It is not a weakly prime, because it can be changed into another prime (43124036720119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21562018360064 + 21562018360065.

It is an arithmetic number, because the mean of its divisors is an integer number (21562018360065).

Almost surely, 2^{43124036720129} is an apocalyptic number.

It is an amenable number.

43124036720129 is a deficient number, since it is larger than the sum of its proper divisors (1).

43124036720129 is an equidigital number, since it uses as much as digits as its factorization.

43124036720129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 43124036720129 in words is "forty-three trillion, one hundred twenty-four billion, thirty-six million, seven hundred twenty thousand, one hundred twenty-nine".