122542123 has 4 divisors (see below), whose sum is σ = 133682328. Its totient is φ = 111401920.

The previous prime is 122542117. The next prime is 122542127. The reversal of 122542123 is 321245221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122542123 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122542094 and 122542103.

It is not an unprimeable number, because it can be changed into a prime (122542127) 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, 5570086 + ... + 5570107.

It is an arithmetic number, because the mean of its divisors is an integer number (33420582).

Almost surely, 2^122542123 is an apocalyptic number.

122542123 is a deficient number, since it is larger than the sum of its proper divisors (11140205).

122542123 is a wasteful number, since it uses less digits than its factorization.

122542123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11140204.

The product of its digits is 960, while the sum is 22.

The square root of 122542123 is about 11069.8745702018. The cubic root of 122542123 is about 496.7011132263.

Adding to 122542123 its reverse (321245221), we get a palindrome (443787344).

It can be divided in two parts, 122 and 542123, that added together give a palindrome (542245).

The spelling of 122542123 in words is "one hundred twenty-two million, five hundred forty-two thousand, one hundred twenty-three".