42106515 has 16 divisors (see below), whose sum is σ = 73495296. Its totient is φ = 20415200.

The previous prime is 42106513. The next prime is 42106541. The reversal of 42106515 is 51560124.

42106515 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 42106515 - 2¹ = 42106513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42106513) 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, 127431 + ... + 127760.

It is an arithmetic number, because the mean of its divisors is an integer number (4593456).

Almost surely, 2^42106515 is an apocalyptic number.

42106515 is a deficient number, since it is larger than the sum of its proper divisors (31388781).

42106515 is a wasteful number, since it uses less digits than its factorization.

42106515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255210.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 42106515 is about 6488.9533054261. The cubic root of 42106515 is about 347.8962648265.

Adding to 42106515 its reverse (51560124), we get a palindrome (93666639).

The spelling of 42106515 in words is "forty-two million, one hundred six thousand, five hundred fifteen".