42024400217 has 2 divisors, whose sum is σ = 42024400218. Its totient is φ = 42024400216.

The previous prime is 42024400199. The next prime is 42024400247. The reversal of 42024400217 is 71200442024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22785600601 + 19238799616 = 150949^2 + 138704^2 .

It is a cyclic number.

It is not a de Polignac number, because 42024400217 - 2¹⁸ = 42024138073 is a prime.

It is not a weakly prime, because it can be changed into another prime (42024400247) 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, 21012200108 + 21012200109.

It is an arithmetic number, because the mean of its divisors is an integer number (21012200109).

Almost surely, 2^42024400217 is an apocalyptic number.

It is an amenable number.

42024400217 is a deficient number, since it is larger than the sum of its proper divisors (1).

42024400217 is an equidigital number, since it uses as much as digits as its factorization.

42024400217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 26.

The spelling of 42024400217 in words is "forty-two billion, twenty-four million, four hundred thousand, two hundred seventeen".