129994 has 4 divisors (see below), whose sum is σ = 194994. Its totient is φ = 64996.

The previous prime is 129971. The next prime is 130003. The reversal of 129994 is 499921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 499921 = 163 ⋅3067.

It can be written as a sum of positive squares in only one way, i.e., 126025 + 3969 = 355^2 + 63^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32497 + ... + 32500.

2¹²⁹⁹⁹⁴ is an apocalyptic number.

129994 is a deficient number, since it is larger than the sum of its proper divisors (65000).

129994 is an equidigital number, since it uses as much as digits as its factorization.

129994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64999.

The product of its digits is 5832, while the sum is 34.

The square root of 129994 is about 360.5468069474. The cubic root of 129994 is about 50.6571908256.

The spelling of 129994 in words is "one hundred twenty-nine thousand, nine hundred ninety-four".