122643315 has 28 divisors (see below), whose sum is σ = 220663584. Its totient is φ = 65407824.

The previous prime is 122643281. The next prime is 122643317. The reversal of 122643315 is 513346221.

122643315 is a `hidden beast` number, since 1 + 2 + 2 + 643 + 3 + 15 = 666.

It is not a de Polignac number, because 122643315 - 2⁶ = 122643251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (122643317) 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 27 ways as a sum of consecutive naturals, for example, 13179 + ... + 20468.

Almost surely, 2^122643315 is an apocalyptic number.

122643315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122643315 is a deficient number, since it is larger than the sum of its proper divisors (98020269).

122643315 is an frugal number, since it uses more digits than its factorization.

122643315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33670 (or 33655 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 122643315 is about 11074.4442298474. Note that the first 3 decimals coincide. The cubic root of 122643315 is about 496.8377964313.

Adding to 122643315 its reverse (513346221), we get a palindrome (635989536).

The spelling of 122643315 in words is "one hundred twenty-two million, six hundred forty-three thousand, three hundred fifteen".