122005245 has 16 divisors (see below), whose sum is σ = 195351552. Its totient is φ = 65021760.

The previous prime is 122005241. The next prime is 122005249. The reversal of 122005245 is 542500221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (122005241) and next prime (122005249).

It is not a de Polignac number, because 122005245 - 2² = 122005241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122005241) 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 15 ways as a sum of consecutive naturals, for example, 29739 + ... + 33591.

It is an arithmetic number, because the mean of its divisors is an integer number (12209472).

Almost surely, 2^122005245 is an apocalyptic number.

122005245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122005245 is a deficient number, since it is larger than the sum of its proper divisors (73346307).

122005245 is a wasteful number, since it uses less digits than its factorization.

122005245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5972.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 122005245 is about 11045.5984446294. The cubic root of 122005245 is about 495.9746737957.

Adding to 122005245 its reverse (542500221), we get a palindrome (664505466).

The spelling of 122005245 in words is "one hundred twenty-two million, five thousand, two hundred forty-five".