42664415 has 8 divisors (see below), whose sum is σ = 51481248. Its totient is φ = 33942240.

The previous prime is 42664381. The next prime is 42664451. The reversal of 42664415 is 51446624.

42664415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42664415 - 2⁸ = 42664159 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 22667 + ... + 24476.

It is an arithmetic number, because the mean of its divisors is an integer number (6435156).

Almost surely, 2^42664415 is an apocalyptic number.

42664415 is a deficient number, since it is larger than the sum of its proper divisors (8816833).

42664415 is a wasteful number, since it uses less digits than its factorization.

42664415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47329.

The product of its digits is 23040, while the sum is 32.

The square root of 42664415 is about 6531.8002878226. The cubic root of 42664415 is about 349.4260388738.

The spelling of 42664415 in words is "forty-two million, six hundred sixty-four thousand, four hundred fifteen".