129946 has 8 divisors (see below), whose sum is σ = 199584. Its totient is φ = 63420.

The previous prime is 129937. The next prime is 129953. The reversal of 129946 is 649921.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670 + ... + 841.

It is an arithmetic number, because the mean of its divisors is an integer number (24948).

2¹²⁹⁹⁴⁶ is an apocalyptic number.

129946 is a deficient number, since it is larger than the sum of its proper divisors (69638).

129946 is a wasteful number, since it uses less digits than its factorization.

129946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556.

The product of its digits is 3888, while the sum is 31.

The square root of 129946 is about 360.4802352418. The cubic root of 129946 is about 50.6509550391.

The spelling of 129946 in words is "one hundred twenty-nine thousand, nine hundred forty-six".