42017515 has 8 divisors (see below), whose sum is σ = 50920848. Its totient is φ = 33280800.

The previous prime is 42017513. The next prime is 42017519. The reversal of 42017515 is 51571024.

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

It is not a de Polignac number, because 42017515 - 2¹ = 42017513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42017515.

It is not an unprimeable number, because it can be changed into a prime (42017513) 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 7 ways as a sum of consecutive naturals, for example, 41097 + ... + 42106.

It is an arithmetic number, because the mean of its divisors is an integer number (6365106).

Almost surely, 2^42017515 is an apocalyptic number.

42017515 is a deficient number, since it is larger than the sum of its proper divisors (8903333).

42017515 is a wasteful number, since it uses less digits than its factorization.

42017515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83309.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 42017515 is about 6482.0918691422. The cubic root of 42017515 is about 347.6509773025.

Adding to 42017515 its reverse (51571024), we get a palindrome (93588539).

The spelling of 42017515 in words is "forty-two million, seventeen thousand, five hundred fifteen".