129497361 has 16 divisors (see below), whose sum is σ = 201529344. Its totient is φ = 72423504.

The previous prime is 129497351. The next prime is 129497363. The reversal of 129497361 is 163794921.

It is not a de Polignac number, because 129497361 - 2⁶ = 129497297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129497363) 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 15 ways as a sum of consecutive naturals, for example, 64615 + ... + 66588.

It is an arithmetic number, because the mean of its divisors is an integer number (12595584).

Almost surely, 2^129497361 is an apocalyptic number.

It is an amenable number.

129497361 is a deficient number, since it is larger than the sum of its proper divisors (72031983).

129497361 is a wasteful number, since it uses less digits than its factorization.

129497361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131260.

The product of its digits is 81648, while the sum is 42.

The square root of 129497361 is about 11379.6907251471. The cubic root of 129497361 is about 505.9259696306.

The spelling of 129497361 in words is "one hundred twenty-nine million, four hundred ninety-seven thousand, three hundred sixty-one".