1288147129 has 2 divisors, whose sum is σ = 1288147130. Its totient is φ = 1288147128.

The previous prime is 1288147127. The next prime is 1288147181. The reversal of 1288147129 is 9217418821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 728730025 + 559417104 = 26995^2 + 23652^2 .

It is a cyclic number.

It is not a de Polignac number, because 1288147129 - 2¹ = 1288147127 is a prime.

Together with 1288147127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1288147121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644073564 + 644073565.

It is an arithmetic number, because the mean of its divisors is an integer number (644073565).

Almost surely, 2^1288147129 is an apocalyptic number.

It is an amenable number.

1288147129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288147129 is an equidigital number, since it uses as much as digits as its factorization.

1288147129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 43.

The square root of 1288147129 is about 35890.7666259722. The cubic root of 1288147129 is about 1088.0657920607.

The spelling of 1288147129 in words is "one billion, two hundred eighty-eight million, one hundred forty-seven thousand, one hundred twenty-nine".