129622 has 4 divisors (see below), whose sum is σ = 194436. Its totient is φ = 64810.

The previous prime is 129607. The next prime is 129629. The reversal of 129622 is 226921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 226921 = 37 ⋅6133.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 129593 and 129602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129629) by changing a digit.

129622 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 as a sum of consecutive naturals, namely, 32404 + ... + 32407.

It is an arithmetic number, because the mean of its divisors is an integer number (48609).

2¹²⁹⁶²² is an apocalyptic number.

129622 is a deficient number, since it is larger than the sum of its proper divisors (64814).

129622 is an equidigital number, since it uses as much as digits as its factorization.

129622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64813.

The product of its digits is 432, while the sum is 22.

The square root of 129622 is about 360.0305542589. The cubic root of 129622 is about 50.6088232621.

Subtracting from 129622 its sum of digits (22), we obtain a square (129600 = 360²).

The spelling of 129622 in words is "one hundred twenty-nine thousand, six hundred twenty-two".