622129 has 2 divisors, whose sum is σ = 622130. Its totient is φ = 622128.

The previous prime is 622123. The next prime is 622133. The reversal of 622129 is 921226.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 547600 + 74529 = 740^2 + 273^2 .

It is a cyclic number.

It is not a de Polignac number, because 622129 - 2⁹ = 621617 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (622123) by changing a digit.

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, 311064 + 311065.

It is an arithmetic number, because the mean of its divisors is an integer number (311065).

2⁶²²¹²⁹ is an apocalyptic number.

It is an amenable number.

622129 is a deficient number, since it is larger than the sum of its proper divisors (1).

622129 is an equidigital number, since it uses as much as digits as its factorization.

622129 is an odious number, because the sum of its binary digits is odd.

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

The square root of 622129 is about 788.7515451649. The cubic root of 622129 is about 85.3676806040.

The spelling of 622129 in words is "six hundred twenty-two thousand, one hundred twenty-nine".