42417478 has 4 divisors (see below), whose sum is σ = 63626220. Its totient is φ = 21208738.

The previous prime is 42417467. The next prime is 42417491. The reversal of 42417478 is 87471424.

42417478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 10604368 + ... + 10604371.

It is an arithmetic number, because the mean of its divisors is an integer number (15906555).

Almost surely, 2^42417478 is an apocalyptic number.

42417478 is a deficient number, since it is larger than the sum of its proper divisors (21208742).

42417478 is a wasteful number, since it uses less digits than its factorization.

42417478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21208741.

The product of its digits is 50176, while the sum is 37.

The square root of 42417478 is about 6512.8701814177. The cubic root of 42417478 is about 348.7505873930.

The spelling of 42417478 in words is "forty-two million, four hundred seventeen thousand, four hundred seventy-eight".