129634 has 4 divisors (see below), whose sum is σ = 194454. Its totient is φ = 64816.

The previous prime is 129631. The next prime is 129641. The reversal of 129634 is 436921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436921 = 661².

It can be written as a sum of positive squares in only one way, i.e., 119025 + 10609 = 345^2 + 103^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 129599 and 129608.

It is not an unprimeable number, because it can be changed into a prime (129631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32407 + ... + 32410.

2¹²⁹⁶³⁴ is an apocalyptic number.

129634 is a deficient number, since it is larger than the sum of its proper divisors (64820).

129634 is an equidigital number, since it uses as much as digits as its factorization.

129634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64819.

The product of its digits is 1296, while the sum is 25.

The square root of 129634 is about 360.0472191255. The cubic root of 129634 is about 50.6103849495.

The spelling of 129634 in words is "one hundred twenty-nine thousand, six hundred thirty-four".