42016105 has 4 divisors (see below), whose sum is σ = 50419332. Its totient is φ = 33612880.

The previous prime is 42016097. The next prime is 42016109. The reversal of 42016105 is 50161024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8248384 + 33767721 = 2872^2 + 5811^2 .

It is not a de Polignac number, because 42016105 - 2³ = 42016097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42016109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4201606 + ... + 4201615.

It is an arithmetic number, because the mean of its divisors is an integer number (12604833).

Almost surely, 2^42016105 is an apocalyptic number.

It is an amenable number.

42016105 is a deficient number, since it is larger than the sum of its proper divisors (8403227).

42016105 is an equidigital number, since it uses as much as digits as its factorization.

42016105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8403226.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 42016105 is about 6481.9831070437. The cubic root of 42016105 is about 347.6470885007.

Adding to 42016105 its reverse (50161024), we get a palindrome (92177129).

The spelling of 42016105 in words is "forty-two million, sixteen thousand, one hundred five".