417742643 has 2 divisors, whose sum is σ = 417742644. Its totient is φ = 417742642.

The previous prime is 417742631. The next prime is 417742657. The reversal of 417742643 is 346247714.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 417742643 - 2¹⁸ = 417480499 is a prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 417742597 and 417742606.

It is not a weakly prime, because it can be changed into another prime (417742613) 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 as a sum of consecutive naturals, namely, 208871321 + 208871322.

It is an arithmetic number, because the mean of its divisors is an integer number (208871322).

Almost surely, 2^417742643 is an apocalyptic number.

417742643 is a deficient number, since it is larger than the sum of its proper divisors (1).

417742643 is an equidigital number, since it uses as much as digits as its factorization.

417742643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 38.

The square root of 417742643 is about 20438.7534600327. The cubic root of 417742643 is about 747.5431565334.

The spelling of 417742643 in words is "four hundred seventeen million, seven hundred forty-two thousand, six hundred forty-three".