129136 has 20 divisors (see below), whose sum is σ = 286192. Its totient is φ = 55296.

The previous prime is 129127. The next prime is 129169. The reversal of 129136 is 631921.

It is a super-2 number, since 2×129136² = 33352212992, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465 + ... + 688.

2¹²⁹¹³⁶ is an apocalyptic number.

129136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129136 is an abundant number, since it is smaller than the sum of its proper divisors (157056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129136 is a wasteful number, since it uses less digits than its factorization.

129136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168 (or 1162 counting only the distinct ones).

The product of its digits is 324, while the sum is 22.

The square root of 129136 is about 359.3549777031. The cubic root of 129136 is about 50.5454937554.

The spelling of 129136 in words is "one hundred twenty-nine thousand, one hundred thirty-six".