42171415 has 32 divisors (see below), whose sum is σ = 59976000. Its totient is φ = 28229760.

The previous prime is 42171401. The next prime is 42171421. The reversal of 42171415 is 51417124.

42171415 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 42171415 - 2⁵ = 42171383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42171415.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 120661 + ... + 121009.

It is an arithmetic number, because the mean of its divisors is an integer number (1874250).

Almost surely, 2^42171415 is an apocalyptic number.

42171415 is a deficient number, since it is larger than the sum of its proper divisors (17804585).

42171415 is a wasteful number, since it uses less digits than its factorization.

42171415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 378 counting only the distinct ones).

The product of its digits is 1120, while the sum is 25.

The square root of 42171415 is about 6493.9521864578. The cubic root of 42171415 is about 348.0749139598.

Adding to 42171415 its reverse (51417124), we get a palindrome (93588539).

The spelling of 42171415 in words is "forty-two million, one hundred seventy-one thousand, four hundred fifteen".