42559105 has 4 divisors (see below), whose sum is σ = 51070932. Its totient is φ = 34047280.

The previous prime is 42559093. The next prime is 42559123. The reversal of 42559105 is 50195524.

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 7595536 + 34963569 = 2756^2 + 5913^2 .

It is not a de Polignac number, because 42559105 - 2⁷ = 42558977 is a prime.

It is a super-2 number, since 2×42559105² = 3622554836802050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4255906 + ... + 4255915.

It is an arithmetic number, because the mean of its divisors is an integer number (12767733).

Almost surely, 2^42559105 is an apocalyptic number.

It is an amenable number.

42559105 is a deficient number, since it is larger than the sum of its proper divisors (8511827).

42559105 is an equidigital number, since it uses as much as digits as its factorization.

42559105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8511826.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 42559105 is about 6523.7339767958. The cubic root of 42559105 is about 349.1383020143.

The spelling of 42559105 in words is "forty-two million, five hundred fifty-nine thousand, one hundred five".