129481 has 8 divisors (see below), whose sum is σ = 144000. Its totient is φ = 115440.

The previous prime is 129469. The next prime is 129491. The reversal of 129481 is 184921.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 129481 - 2⁵ = 129449 is a prime.

It is a super-2 number, since 2×129481² = 33530658722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129401) 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 in 7 ways as a sum of consecutive naturals, for example, 795 + ... + 943.

It is an arithmetic number, because the mean of its divisors is an integer number (18000).

2¹²⁹⁴⁸¹ is an apocalyptic number.

129481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

129481 is a deficient number, since it is larger than the sum of its proper divisors (14519).

129481 is a wasteful number, since it uses less digits than its factorization.

129481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239.

The product of its digits is 576, while the sum is 25.

The square root of 129481 is about 359.8346842649. The cubic root of 129481 is about 50.5904662109.

The spelling of 129481 in words is "one hundred twenty-nine thousand, four hundred eighty-one".