129496 has 8 divisors (see below), whose sum is σ = 242820. Its totient is φ = 64744.

The previous prime is 129491. The next prime is 129497. The reversal of 129496 is 694921.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8086 + ... + 8101.

2¹²⁹⁴⁹⁶ is an apocalyptic number.

It is an amenable number.

129496 is a deficient number, since it is larger than the sum of its proper divisors (113324).

129496 is a wasteful number, since it uses less digits than its factorization.

129496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16193 (or 16189 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 129496 is about 359.8555265659. The cubic root of 129496 is about 50.5924197220.

It can be divided in two parts, 129 and 496, that added together give a 4-th power (625 = 5⁴).

The spelling of 129496 in words is "one hundred twenty-nine thousand, four hundred ninety-six".