42564967 has 4 divisors (see below), whose sum is σ = 42588736. Its totient is φ = 42541200.

The previous prime is 42564931. The next prime is 42564983. The reversal of 42564967 is 76946524.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42564967 - 2⁷ = 42564839 is a prime.

It is a super-2 number, since 2×42564967² = 3623552831422178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42564167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8958 + ... + 12859.

It is an arithmetic number, because the mean of its divisors is an integer number (10647184).

Almost surely, 2^42564967 is an apocalyptic number.

42564967 is a deficient number, since it is larger than the sum of its proper divisors (23769).

42564967 is a wasteful number, since it uses less digits than its factorization.

42564967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23768.

The product of its digits is 362880, while the sum is 43.

The square root of 42564967 is about 6524.1832439011. The cubic root of 42564967 is about 349.1543311324.

The spelling of 42564967 in words is "forty-two million, five hundred sixty-four thousand, nine hundred sixty-seven".