122805959 has 4 divisors (see below), whose sum is σ = 122833320. Its totient is φ = 122778600.

The previous prime is 122805937. The next prime is 122805983. The reversal of 122805959 is 959508221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 959508221 = 7 ⋅137072603.

It is a cyclic number.

It is not a de Polignac number, because 122805959 - 2⁸ = 122805703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122805989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5192 + ... + 16509.

It is an arithmetic number, because the mean of its divisors is an integer number (30708330).

Almost surely, 2^122805959 is an apocalyptic number.

122805959 is a deficient number, since it is larger than the sum of its proper divisors (27361).

122805959 is an equidigital number, since it uses as much as digits as its factorization.

122805959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27360.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 122805959 is about 11081.7850096453. The cubic root of 122805959 is about 497.0573273305.

The spelling of 122805959 in words is "one hundred twenty-two million, eight hundred five thousand, nine hundred fifty-nine".