1288129497 has 8 divisors (see below), whose sum is σ = 1745662080. Its totient is φ = 844674960.

The previous prime is 1288129481. The next prime is 1288129501. The reversal of 1288129497 is 7949218821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1288129497 - 2⁴ = 1288129481 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1288122497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3519297 + ... + 3519662.

It is an arithmetic number, because the mean of its divisors is an integer number (218207760).

Almost surely, 2^1288129497 is an apocalyptic number.

It is an amenable number.

1288129497 is a deficient number, since it is larger than the sum of its proper divisors (457532583).

1288129497 is an equidigital number, since it uses as much as digits as its factorization.

1288129497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7039023.

The product of its digits is 580608, while the sum is 51.

The square root of 1288129497 is about 35890.5209909246. The cubic root of 1288129497 is about 1088.0608276010.

The spelling of 1288129497 in words is "one billion, two hundred eighty-eight million, one hundred twenty-nine thousand, four hundred ninety-seven".