42515515 has 8 divisors (see below), whose sum is σ = 58307040. Its totient is φ = 29153472.

The previous prime is 42515507. The next prime is 42515531. The reversal of 42515515 is 51551524.

42515515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 42515515 - 2³ = 42515507 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 607330 + ... + 607399.

It is an arithmetic number, because the mean of its divisors is an integer number (7288380).

Almost surely, 2^42515515 is an apocalyptic number.

42515515 is a deficient number, since it is larger than the sum of its proper divisors (15791525).

42515515 is a wasteful number, since it uses less digits than its factorization.

42515515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214741.

The product of its digits is 5000, while the sum is 28.

The square root of 42515515 is about 6520.3922428026. The cubic root of 42515515 is about 349.0190628416.

The spelling of 42515515 in words is "forty-two million, five hundred fifteen thousand, five hundred fifteen".