42568247 has 4 divisors (see below), whose sum is σ = 42759360. Its totient is φ = 42377136.

The previous prime is 42568243. The next prime is 42568283. The reversal of 42568247 is 74286524.

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

It is not a de Polignac number, because 42568247 - 2² = 42568243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42568247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42568243) 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, 95222 + ... + 95667.

It is an arithmetic number, because the mean of its divisors is an integer number (10689840).

Almost surely, 2^42568247 is an apocalyptic number.

42568247 is a deficient number, since it is larger than the sum of its proper divisors (191113).

42568247 is a wasteful number, since it uses less digits than its factorization.

42568247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191112.

The product of its digits is 107520, while the sum is 38.

The square root of 42568247 is about 6524.4346115200. The cubic root of 42568247 is about 349.1632993589.

The spelling of 42568247 in words is "forty-two million, five hundred sixty-eight thousand, two hundred forty-seven".