129698 has 4 divisors (see below), whose sum is σ = 194550. Its totient is φ = 64848.

The previous prime is 129671. The next prime is 129707. The reversal of 129698 is 896921.

129698 is nontrivially palindromic in base 11.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 113569 + 16129 = 337^2 + 127^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32423 + ... + 32426.

2¹²⁹⁶⁹⁸ is an apocalyptic number.

129698 is a deficient number, since it is larger than the sum of its proper divisors (64852).

129698 is an equidigital number, since it uses as much as digits as its factorization.

129698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64851.

The product of its digits is 7776, while the sum is 35.

The square root of 129698 is about 360.1360853900. The cubic root of 129698 is about 50.6187123218.

The spelling of 129698 in words is "one hundred twenty-nine thousand, six hundred ninety-eight".