129601 has 8 divisors (see below), whose sum is σ = 138600. Its totient is φ = 120960.

The previous prime is 129593. The next prime is 129607. The reversal of 129601 is 106921.

129601 = T₁₀ + T₁₁ + ... + T₉₁.

It is a Cunningham number, because it is equal to 360²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 6400 + 123201 = 80^2 + 351^2 .

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 129601 - 2³ = 129593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1135 + ... + 1243.

It is an arithmetic number, because the mean of its divisors is an integer number (17325).

129601 is a Friedman number, since it can be written as 90^2*16+1, using all its digits and the basic arithmetic operations.

2¹²⁹⁶⁰¹ is an apocalyptic number.

It is an amenable number.

129601 is a deficient number, since it is larger than the sum of its proper divisors (8999).

129601 is a wasteful number, since it uses less digits than its factorization.

129601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 129601 is about 360.0013888862. The cubic root of 129601 is about 50.6060900771.

The spelling of 129601 in words is "one hundred twenty-nine thousand, six hundred one".