42815378 has 8 divisors (see below), whose sum is σ = 64506672. Its totient is φ = 21313156.

The previous prime is 42815359. The next prime is 42815387. The reversal of 42815378 is 87351824.

42815378 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 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 3 ways as a sum of consecutive naturals, for example, 46700 + ... + 47607.

It is an arithmetic number, because the mean of its divisors is an integer number (8063334).

Almost surely, 2^42815378 is an apocalyptic number.

42815378 is a deficient number, since it is larger than the sum of its proper divisors (21691294).

42815378 is a wasteful number, since it uses less digits than its factorization.

42815378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94536.

The product of its digits is 53760, while the sum is 38.

The square root of 42815378 is about 6543.3460859105. The cubic root of 42815378 is about 349.8376880050.

The spelling of 42815378 in words is "forty-two million, eight hundred fifteen thousand, three hundred seventy-eight".