42564715 has 8 divisors (see below), whose sum is σ = 51189840. Its totient is φ = 33976992.

The previous prime is 42564703. The next prime is 42564757. The reversal of 42564715 is 51746524.

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 42564715 - 2¹⁵ = 42531947 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6780 + ... + 11449.

It is an arithmetic number, because the mean of its divisors is an integer number (6398730).

Almost surely, 2^42564715 is an apocalyptic number.

42564715 is a deficient number, since it is larger than the sum of its proper divisors (8625125).

42564715 is a wasteful number, since it uses less digits than its factorization.

42564715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18701.

The product of its digits is 33600, while the sum is 34.

The square root of 42564715 is about 6524.1639311103. The cubic root of 42564715 is about 349.1536420911.

The spelling of 42564715 in words is "forty-two million, five hundred sixty-four thousand, seven hundred fifteen".