42568543 has 2 divisors, whose sum is σ = 42568544. Its totient is φ = 42568542.

The previous prime is 42568501. The next prime is 42568583. The reversal of 42568543 is 34586524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42568543 - 2¹³ = 42560351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42568583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21284271 + 21284272.

It is an arithmetic number, because the mean of its divisors is an integer number (21284272).

Almost surely, 2^42568543 is an apocalyptic number.

42568543 is a deficient number, since it is larger than the sum of its proper divisors (1).

42568543 is an equidigital number, since it uses as much as digits as its factorization.

42568543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 37.

The square root of 42568543 is about 6524.4572954384. The cubic root of 42568543 is about 349.1641086640.

The spelling of 42568543 in words is "forty-two million, five hundred sixty-eight thousand, five hundred forty-three".