123242617 has 2 divisors, whose sum is σ = 123242618. Its totient is φ = 123242616.

The previous prime is 123242549. The next prime is 123242627. The reversal of 123242617 is 716242321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97140736 + 26101881 = 9856^2 + 5109^2 .

It is a cyclic number.

It is not a de Polignac number, because 123242617 - 2¹¹ = 123240569 is a prime.

It is not a weakly prime, because it can be changed into another prime (123242627) by changing a digit.

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 as a sum of consecutive naturals, namely, 61621308 + 61621309.

It is an arithmetic number, because the mean of its divisors is an integer number (61621309).

Almost surely, 2^123242617 is an apocalyptic number.

It is an amenable number.

123242617 is a deficient number, since it is larger than the sum of its proper divisors (1).

123242617 is an equidigital number, since it uses as much as digits as its factorization.

123242617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 28.

The square root of 123242617 is about 11101.4691370107. The cubic root of 123242617 is about 497.6457551266.

Adding to 123242617 its reverse (716242321), we get a palindrome (839484938).

It can be divided in two parts, 12324 and 2617, that added together give a palindrome (14941).

The spelling of 123242617 in words is "one hundred twenty-three million, two hundred forty-two thousand, six hundred seventeen".