8564942 has 4 divisors (see below), whose sum is σ = 12847416. Its totient is φ = 4282470.

The previous prime is 8564939. The next prime is 8564981. The reversal of 8564942 is 2494658.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2494658 = 2 ⋅1247329.

It is a d-powerful number, because it can be written as 8⁷ + 5⁵ + 6⁸ + 4² + 9⁷ + 4² + 2¹¹ .

It is a junction number, because it is equal to n+sod(n) for n = 8564896 and 8564905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2141234 + ... + 2141237.

It is an arithmetic number, because the mean of its divisors is an integer number (3211854).

Almost surely, 2^8564942 is an apocalyptic number.

8564942 is a deficient number, since it is larger than the sum of its proper divisors (4282474).

8564942 is a wasteful number, since it uses less digits than its factorization.

8564942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4282473.

The product of its digits is 69120, while the sum is 38.

The square root of 8564942 is about 2926.5922162133. The cubic root of 8564942 is about 204.6011837794.

The spelling of 8564942 in words is "eight million, five hundred sixty-four thousand, nine hundred forty-two".