42450217417 has 2 divisors, whose sum is σ = 42450217418. Its totient is φ = 42450217416.

The previous prime is 42450217343. The next prime is 42450217427. The reversal of 42450217417 is 71471205424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40977500041 + 1472717376 = 202429^2 + 38376^2 .

It is a cyclic number.

It is not a de Polignac number, because 42450217417 - 2¹⁵ = 42450184649 is a prime.

It is not a weakly prime, because it can be changed into another prime (42450217427) 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, 21225108708 + 21225108709.

It is an arithmetic number, because the mean of its divisors is an integer number (21225108709).

Almost surely, 2^42450217417 is an apocalyptic number.

It is an amenable number.

42450217417 is a deficient number, since it is larger than the sum of its proper divisors (1).

42450217417 is an equidigital number, since it uses as much as digits as its factorization.

42450217417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62720, while the sum is 37.

The spelling of 42450217417 in words is "forty-two billion, four hundred fifty million, two hundred seventeen thousand, four hundred seventeen".