122542636 has 12 divisors (see below), whose sum is σ = 215088328. Its totient is φ = 61088832.

The previous prime is 122542627. The next prime is 122542639. The reversal of 122542636 is 636245221.

It is a junction number, because it is equal to n+sod(n) for n = 122542598 and 122542607.

It is not an unprimeable number, because it can be changed into a prime (122542639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44106 + ... + 46801.

Almost surely, 2^122542636 is an apocalyptic number.

It is an amenable number.

122542636 is a deficient number, since it is larger than the sum of its proper divisors (92545692).

122542636 is a wasteful number, since it uses less digits than its factorization.

122542636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91248 (or 91246 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 122542636 is about 11069.8977411718. The cubic root of 122542636 is about 496.7018063412.

Adding to 122542636 its reverse (636245221), we get a palindrome (758787857).

The spelling of 122542636 in words is "one hundred twenty-two million, five hundred forty-two thousand, six hundred thirty-six".