42105530 has 8 divisors (see below), whose sum is σ = 75789972. Its totient is φ = 16842208.

The previous prime is 42105523. The next prime is 42105563. The reversal of 42105530 is 3550124.

42105530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 41460721 + 644809 = 6439^2 + 803^2 .

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

It is a super-3 number, since 3×42105530³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2105267 + ... + 2105286.

Almost surely, 2^42105530 is an apocalyptic number.

42105530 is a deficient number, since it is larger than the sum of its proper divisors (33684442).

42105530 is a wasteful number, since it uses less digits than its factorization.

42105530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4210560.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 42105530 is about 6488.8774067631. The cubic root of 42105530 is about 347.8935520199.

Adding to 42105530 its reverse (3550124), we get a palindrome (45655654).

The spelling of 42105530 in words is "forty-two million, one hundred five thousand, five hundred thirty".