129122 has 16 divisors (see below), whose sum is σ = 231552. Its totient is φ = 52800.

The previous prime is 129121. The next prime is 129127. The reversal of 129122 is 221921.

It is a self number, because there is not a number n which added to its sum of digits gives 129122.

It is not an unprimeable number, because it can be changed into a prime (129121) 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, 122 + ... + 522.

It is an arithmetic number, because the mean of its divisors is an integer number (14472).

2¹²⁹¹²² is an apocalyptic number.

129122 is a deficient number, since it is larger than the sum of its proper divisors (102430).

129122 is a wasteful number, since it uses less digits than its factorization.

129122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433.

The product of its digits is 72, while the sum is 17.

The square root of 129122 is about 359.3354978290. The cubic root of 129122 is about 50.5436670959.

The spelling of 129122 in words is "one hundred twenty-nine thousand, one hundred twenty-two".