42643583 has 2 divisors, whose sum is σ = 42643584. Its totient is φ = 42643582.

The previous prime is 42643547. The next prime is 42643591. The reversal of 42643583 is 38534624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42643583 - 2⁶ = 42643519 is a prime.

It is a Chen prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42643483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21321791 + 21321792.

It is an arithmetic number, because the mean of its divisors is an integer number (21321792).

Almost surely, 2^42643583 is an apocalyptic number.

42643583 is a deficient number, since it is larger than the sum of its proper divisors (1).

42643583 is an equidigital number, since it uses as much as digits as its factorization.

42643583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 35.

The square root of 42643583 is about 6530.2054332157. The cubic root of 42643583 is about 349.3691575257.

The spelling of 42643583 in words is "forty-two million, six hundred forty-three thousand, five hundred eighty-three".