129926 has 8 divisors (see below), whose sum is σ = 196560. Its totient is φ = 64408.

The previous prime is 129919. The next prime is 129937. The reversal of 129926 is 629921.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140 + ... + 528.

It is an arithmetic number, because the mean of its divisors is an integer number (24570).

2¹²⁹⁹²⁶ is an apocalyptic number.

129926 is a deficient number, since it is larger than the sum of its proper divisors (66634).

129926 is a wasteful number, since it uses less digits than its factorization.

129926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558.

The product of its digits is 1944, while the sum is 29.

The square root of 129926 is about 360.4524934024. The cubic root of 129926 is about 50.6483563415.

The spelling of 129926 in words is "one hundred twenty-nine thousand, nine hundred twenty-six".