42404424217 has 4 divisors (see below), whose sum is σ = 42816117760. Its totient is φ = 41992730676.

The previous prime is 42404424193. The next prime is 42404424229. The reversal of 42404424217 is 71242440424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42404424217 - 2⁷ = 42404424089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42404428217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205846617 + ... + 205846822.

It is an arithmetic number, because the mean of its divisors is an integer number (10704029440).

Almost surely, 2^42404424217 is an apocalyptic number.

It is an amenable number.

42404424217 is a deficient number, since it is larger than the sum of its proper divisors (411693543).

42404424217 is a wasteful number, since it uses less digits than its factorization.

42404424217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411693542.

The product of its (nonzero) digits is 57344, while the sum is 34.

The spelling of 42404424217 in words is "forty-two billion, four hundred four million, four hundred twenty-four thousand, two hundred seventeen".