43041212129 has 2 divisors, whose sum is σ = 43041212130. Its totient is φ = 43041212128.

The previous prime is 43041212113. The next prime is 43041212147. The reversal of 43041212129 is 92121214034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25288314529 + 17752897600 = 159023^2 + 133240^2 .

It is a cyclic number.

It is not a de Polignac number, because 43041212129 - 2⁴ = 43041212113 is a prime.

It is not a weakly prime, because it can be changed into another prime (43041212029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21520606064 + 21520606065.

It is an arithmetic number, because the mean of its divisors is an integer number (21520606065).

Almost surely, 2^43041212129 is an apocalyptic number.

It is an amenable number.

43041212129 is a deficient number, since it is larger than the sum of its proper divisors (1).

43041212129 is an equidigital number, since it uses as much as digits as its factorization.

43041212129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 43041212129 in words is "forty-three billion, forty-one million, two hundred twelve thousand, one hundred twenty-nine".