42006850505 has 8 divisors (see below), whose sum is σ = 51359319432. Its totient is φ = 32971414528.

The previous prime is 42006850493. The next prime is 42006850531. The reversal of 42006850505 is 50505860024.

It can be written as a sum of positive squares in 4 ways, for example, as 2426941696 + 39579908809 = 49264^2 + 198947^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42006850505 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79257944 + ... + 79258473.

It is an arithmetic number, because the mean of its divisors is an integer number (6419914929).

Almost surely, 2^42006850505 is an apocalyptic number.

It is an amenable number.

42006850505 is a deficient number, since it is larger than the sum of its proper divisors (9352468927).

42006850505 is a wasteful number, since it uses less digits than its factorization.

42006850505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158516475.

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 42006850505 in words is "forty-two billion, six million, eight hundred fifty thousand, five hundred five".