42717515 has 16 divisors (see below), whose sum is σ = 54486432. Its totient is φ = 32039424.

The previous prime is 42717487. The next prime is 42717517. The reversal of 42717515 is 51571724.

42717515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42717515 - 2¹⁰ = 42716491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42717517) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 25277 + ... + 26913.

It is an arithmetic number, because the mean of its divisors is an integer number (3405402).

Almost surely, 2^42717515 is an apocalyptic number.

42717515 is a deficient number, since it is larger than the sum of its proper divisors (11768917).

42717515 is a wasteful number, since it uses less digits than its factorization.

42717515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966.

The product of its digits is 9800, while the sum is 32.

The square root of 42717515 is about 6535.8637531699. The cubic root of 42717515 is about 349.5709436331.

The spelling of 42717515 in words is "forty-two million, seven hundred seventeen thousand, five hundred fifteen".