42566743 has 2 divisors, whose sum is σ = 42566744. Its totient is φ = 42566742.

The previous prime is 42566731. The next prime is 42566779. The reversal of 42566743 is 34766524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42566743 - 2⁹ = 42566231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42569743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21283371 + 21283372.

It is an arithmetic number, because the mean of its divisors is an integer number (21283372).

Almost surely, 2^42566743 is an apocalyptic number.

42566743 is a deficient number, since it is larger than the sum of its proper divisors (1).

42566743 is an equidigital number, since it uses as much as digits as its factorization.

42566743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 37.

The square root of 42566743 is about 6524.3193514726. The cubic root of 42566743 is about 349.1591871561.

The spelling of 42566743 in words is "forty-two million, five hundred sixty-six thousand, seven hundred forty-three".