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BaseRepresentation
bin11111100011011001
320120021201
4133203121
513113431
62434201
71045540
oct374331
9216251
10129241
1189112
1262961
1346a98
1435157
1528461
hex1f8d9

129241 has 8 divisors (see below), whose sum is σ = 152000. Its totient is φ = 107568.

The previous prime is 129229. The next prime is 129263. The reversal of 129241 is 142921.

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 129241 - 25 = 129209 is a prime.

It is the 360-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129221) by changing a digit.

It is a nontrivial repunit in base 359.

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, 10 + ... + 508.

It is an arithmetic number, because the mean of its divisors is an integer number (19000).

2129241 is an apocalyptic number.

It is an amenable number.

129241 is a deficient number, since it is larger than the sum of its proper divisors (22759).

129241 is an equidigital number, since it uses as much as digits as its factorization.

129241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543.

The product of its digits is 144, while the sum is 19.

The square root of 129241 is about 359.5010431139. The cubic root of 129241 is about 50.5591894949.

The spelling of 129241 in words is "one hundred twenty-nine thousand, two hundred forty-one".

Divisors: 1 7 37 259 499 3493 18463 129241