42564895 has 16 divisors (see below), whose sum is σ = 53048160. Its totient is φ = 32747904.

The previous prime is 42564887. The next prime is 42564931. The reversal of 42564895 is 59846524.

It is a cyclic number.

It is not a de Polignac number, because 42564895 - 2³ = 42564887 is a prime.

It is a super-2 number, since 2×42564895² = 3623540572722050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53692 + ... + 54478.

It is an arithmetic number, because the mean of its divisors is an integer number (3315510).

Almost surely, 2^42564895 is an apocalyptic number.

42564895 is a deficient number, since it is larger than the sum of its proper divisors (10483265).

42564895 is a wasteful number, since it uses less digits than its factorization.

42564895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194.

The product of its digits is 345600, while the sum is 43.

The square root of 42564895 is about 6524.1777259667. The cubic root of 42564895 is about 349.1541342637.

The spelling of 42564895 in words is "forty-two million, five hundred sixty-four thousand, eight hundred ninety-five".