122242505 has 48 divisors (see below), whose sum is σ = 189210816. Its totient is φ = 74954880.

The previous prime is 122242489. The next prime is 122242531. The reversal of 122242505 is 505242221.

122242505 = 1068² + 1069² + ... + 1165².

It is not a de Polignac number, because 122242505 - 2⁴ = 122242489 is a prime.

It is a Duffinian 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 in 47 ways as a sum of consecutive naturals, for example, 180227 + ... + 180903.

It is an arithmetic number, because the mean of its divisors is an integer number (3941892).

Almost surely, 2^122242505 is an apocalyptic number.

It is an amenable number.

122242505 is a deficient number, since it is larger than the sum of its proper divisors (66968311).

122242505 is a wasteful number, since it uses less digits than its factorization.

122242505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 122242505 is about 11056.3332529370. Note that the first 3 decimals coincide. The cubic root of 122242505 is about 496.2959680530.

Adding to 122242505 its reverse (505242221), we get a palindrome (627484726).

The spelling of 122242505 in words is "one hundred twenty-two million, two hundred forty-two thousand, five hundred five".