42505415 has 8 divisors (see below), whose sum is σ = 52385280. Its totient is φ = 33085152.

The previous prime is 42505381. The next prime is 42505427. The reversal of 42505415 is 51450524.

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 42505415 - 2⁸ = 42505159 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 114695 + ... + 115064.

It is an arithmetic number, because the mean of its divisors is an integer number (6548160).

Almost surely, 2^42505415 is an apocalyptic number.

42505415 is a deficient number, since it is larger than the sum of its proper divisors (9879865).

42505415 is a wasteful number, since it uses less digits than its factorization.

42505415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229801.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 42505415 is about 6519.6177035161. The cubic root of 42505415 is about 348.9914229576.

Adding to 42505415 its reverse (51450524), we get a palindrome (93955939).

The spelling of 42505415 in words is "forty-two million, five hundred five thousand, four hundred fifteen".