42515105 has 16 divisors (see below), whose sum is σ = 53568000. Its totient is φ = 32350080.

The previous prime is 42515101. The next prime is 42515117. The reversal of 42515105 is 50151524.

It is a happy number.

It is not a de Polignac number, because 42515105 - 2² = 42515101 is a prime.

It is a super-2 number, since 2×42515105² = 3615068306322050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42515101) 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 15 ways as a sum of consecutive naturals, for example, 6821 + ... + 11469.

It is an arithmetic number, because the mean of its divisors is an integer number (3348000).

Almost surely, 2^42515105 is an apocalyptic number.

It is an amenable number.

42515105 is a deficient number, since it is larger than the sum of its proper divisors (11052895).

42515105 is a wasteful number, since it uses less digits than its factorization.

42515105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4744.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 42515105 is about 6520.3608029004. The cubic root of 42515105 is about 349.0179409118.

Adding to 42515105 its reverse (50151524), we get a palindrome (92666629).

The spelling of 42515105 in words is "forty-two million, five hundred fifteen thousand, one hundred five".