123641717 has 2 divisors, whose sum is σ = 123641718. Its totient is φ = 123641716.

The previous prime is 123641689. The next prime is 123641789. The reversal of 123641717 is 717146321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114725521 + 8916196 = 10711^2 + 2986^2 .

It is a cyclic number.

It is not a de Polignac number, because 123641717 - 2¹² = 123637621 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123646717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61820858 + 61820859.

It is an arithmetic number, because the mean of its divisors is an integer number (61820859).

Almost surely, 2^123641717 is an apocalyptic number.

It is an amenable number.

123641717 is a deficient number, since it is larger than the sum of its proper divisors (1).

123641717 is an equidigital number, since it uses as much as digits as its factorization.

123641717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 32.

The square root of 123641717 is about 11119.4297065992. The cubic root of 123641717 is about 498.1823563500.

The spelling of 123641717 in words is "one hundred twenty-three million, six hundred forty-one thousand, seven hundred seventeen".