129422 has 8 divisors (see below), whose sum is σ = 195816. Its totient is φ = 64152.

The previous prime is 129419. The next prime is 129439. The reversal of 129422 is 224921.

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

It is a junction number, because it is equal to n+sod(n) for n = 129394 and 129403.

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, 128 + ... + 524.

It is an arithmetic number, because the mean of its divisors is an integer number (24477).

2¹²⁹⁴²² is an apocalyptic number.

129422 is a deficient number, since it is larger than the sum of its proper divisors (66394).

129422 is a wasteful number, since it uses less digits than its factorization.

129422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562.

The product of its digits is 288, while the sum is 20.

The square root of 129422 is about 359.7526928322. The cubic root of 129422 is about 50.5827809367.

The spelling of 129422 in words is "one hundred twenty-nine thousand, four hundred twenty-two".