42006404520005 has 8 divisors (see below), whose sum is σ = 53372843390232. Its totient is φ = 31628351638528.

The previous prime is 42006404520001. The next prime is 42006404520077. The reversal of 42006404520005 is 50002540460024.

It can be written as a sum of positive squares in 4 ways, for example, as 1500333464161 + 40506071055844 = 1224881^2 + 6364438^2 .

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 42006404520005 - 2² = 42006404520001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42006404520001) 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 in 7 ways as a sum of consecutive naturals, for example, 247096497092 + ... + 247096497261.

It is an arithmetic number, because the mean of its divisors is an integer number (6671605423779).

Almost surely, 2^{42006404520005} is an apocalyptic number.

It is an amenable number.

42006404520005 is a deficient number, since it is larger than the sum of its proper divisors (11366438870227).

42006404520005 is a wasteful number, since it uses less digits than its factorization.

42006404520005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494192994375.

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 42006404520005 its reverse (50002540460024), we get a palindrome (92008944980029).

The spelling of 42006404520005 in words is "forty-two trillion, six billion, four hundred four million, five hundred twenty thousand, five".