40042424005 has 8 divisors (see below), whose sum is σ = 48056894712. Its totient is φ = 32029948608.

The previous prime is 40042423999. The next prime is 40042424021. The reversal of 40042424005 is 50042424004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14436983716 + 25605440289 = 120154^2 + 160017^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40042424005 - 2¹⁹ = 40041899717 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454314 + ... + 535243.

It is an arithmetic number, because the mean of its divisors is an integer number (6007111839).

Almost surely, 2^40042424005 is an apocalyptic number.

It is an amenable number.

40042424005 is a deficient number, since it is larger than the sum of its proper divisors (8014470707).

40042424005 is an equidigital number, since it uses as much as digits as its factorization.

40042424005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997655.

The product of its (nonzero) digits is 5120, while the sum is 25.

Adding to 40042424005 its reverse (50042424004), we get a palindrome (90084848009).

Subtracting 40042424005 from its reverse (50042424004), we obtain a palindrome (9999999999).

The spelling of 40042424005 in words is "forty billion, forty-two million, four hundred twenty-four thousand, five".