129485 has 16 divisors (see below), whose sum is σ = 172800. Its totient is φ = 92736.

The previous prime is 129469. The next prime is 129491. The reversal of 129485 is 584921.

It is a cyclic number.

It is not a de Polignac number, because 129485 - 2⁴ = 129469 is a prime.

It is a super-4 number, since 4×129485⁴ (a number of 22 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2732 + ... + 2778.

It is an arithmetic number, because the mean of its divisors is an integer number (10800).

2¹²⁹⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

129485 is a deficient number, since it is larger than the sum of its proper divisors (43315).

129485 is a wasteful number, since it uses less digits than its factorization.

129485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100.

The product of its digits is 2880, while the sum is 29.

The square root of 129485 is about 359.8402423298. The cubic root of 129485 is about 50.5909871619.

129485 divided by its sum of digits (29) gives a triangular number (4465 = T₉₄).

The spelling of 129485 in words is "one hundred twenty-nine thousand, four hundred eighty-five".