42415565 has 16 divisors (see below), whose sum is σ = 53346816. Its totient is φ = 32313600.

The previous prime is 42415523. The next prime is 42415577. The reversal of 42415565 is 56551424.

It is not a de Polignac number, because 42415565 - 2¹⁶ = 42350029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30485 + ... + 31845.

It is an arithmetic number, because the mean of its divisors is an integer number (3334176).

Almost surely, 2^42415565 is an apocalyptic number.

It is an amenable number.

42415565 is a deficient number, since it is larger than the sum of its proper divisors (10931251).

42415565 is a wasteful number, since it uses less digits than its factorization.

42415565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660.

The product of its digits is 24000, while the sum is 32.

The square root of 42415565 is about 6512.7233167086. The cubic root of 42415565 is about 348.7453445078.

Adding to 42415565 its reverse (56551424), we get a palindrome (98966989).

The spelling of 42415565 in words is "forty-two million, four hundred fifteen thousand, five hundred sixty-five".