42240005 has 8 divisors (see below), whose sum is σ = 50730624. Its totient is φ = 33763600.

The previous prime is 42239971. The next prime is 42240013. The reversal of 42240005 is 50004224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-42240005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4760 + ... + 10350.

It is an arithmetic number, because the mean of its divisors is an integer number (6341328).

Almost surely, 2^42240005 is an apocalyptic number.

It is an amenable number.

42240005 is a deficient number, since it is larger than the sum of its proper divisors (8490619).

42240005 is a wasteful number, since it uses less digits than its factorization.

42240005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7107.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 42240005 is about 6499.2311083697. The cubic root of 42240005 is about 348.2635213884.

Adding to 42240005 its reverse (50004224), we get a palindrome (92244229).

The spelling of 42240005 in words is "forty-two million, two hundred forty thousand, five".