129219 has 8 divisors (see below), whose sum is σ = 181440. Its totient is φ = 81576.

The previous prime is 129209. The next prime is 129221. The reversal of 129219 is 912921.

129219 = T₁₀₇ + T₁₀₈ + ... + T₁₂₅.

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

It is not a de Polignac number, because 129219 - 2⁵ = 129187 is a prime.

It is a super-2 number, since 2×129219² = 33395099922, which contains 22 as substring.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (129209) 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, 1077 + ... + 1190.

It is an arithmetic number, because the mean of its divisors is an integer number (22680).

2¹²⁹²¹⁹ is an apocalyptic number.

129219 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

129219 is a deficient number, since it is larger than the sum of its proper divisors (52221).

129219 is a wasteful number, since it uses less digits than its factorization.

129219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289.

The product of its digits is 324, while the sum is 24.

The square root of 129219 is about 359.4704438476. The cubic root of 129219 is about 50.5563205258.

The spelling of 129219 in words is "one hundred twenty-nine thousand, two hundred nineteen".