122782165 has 48 divisors (see below), whose sum is σ = 175022208. Its totient is φ = 81840000.

The previous prime is 122782159. The next prime is 122782171. The reversal of 122782165 is 561287221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (122782159) and next prime (122782171).

It is not a de Polignac number, because 122782165 - 2⁹ = 122781653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122782165.

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 in 47 ways as a sum of consecutive naturals, for example, 1215615 + ... + 1215715.

It is an arithmetic number, because the mean of its divisors is an integer number (3646296).

Almost surely, 2^122782165 is an apocalyptic number.

It is an amenable number.

122782165 is a deficient number, since it is larger than the sum of its proper divisors (52240043).

122782165 is a wasteful number, since it uses less digits than its factorization.

122782165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 171 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 122782165 is about 11080.7113941299. The cubic root of 122782165 is about 497.0252231719.

It can be divided in two parts, 122 and 782165, that added together give a palindrome (782287).

The spelling of 122782165 in words is "one hundred twenty-two million, seven hundred eighty-two thousand, one hundred sixty-five".