129098 has 8 divisors (see below), whose sum is σ = 205092. Its totient is φ = 60736.

The previous prime is 129097. The next prime is 129113. The reversal of 129098 is 890921.

129098 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 2 ways, for example, as 124609 + 4489 = 353^2 + 67^2 .

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

It is an Ulam number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 129098.

It is not an unprimeable number, because it can be changed into a prime (129097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1865 + ... + 1932.

2¹²⁹⁰⁹⁸ is an apocalyptic number.

129098 is a deficient number, since it is larger than the sum of its proper divisors (75994).

129098 is a wasteful number, since it uses less digits than its factorization.

129098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3816.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 129098 is about 359.3021013020. The cubic root of 129098 is about 50.5405353725.

The spelling of 129098 in words is "one hundred twenty-nine thousand, ninety-eight".