122806 has 4 divisors (see below), whose sum is σ = 184212. Its totient is φ = 61402.

The previous prime is 122789. The next prime is 122819. The reversal of 122806 is 608221.

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: 608221 = 79 ⋅7699.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30700 + ... + 30703.

It is an arithmetic number, because the mean of its divisors is an integer number (46053).

2¹²²⁸⁰⁶ is an apocalyptic number.

122806 is a deficient number, since it is larger than the sum of its proper divisors (61406).

122806 is an equidigital number, since it uses as much as digits as its factorization.

122806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61405.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 122806 is about 350.4368702063. The cubic root of 122806 is about 49.7057382646.

The spelling of 122806 in words is "one hundred twenty-two thousand, eight hundred six".