42771653 has 2 divisors, whose sum is σ = 42771654. Its totient is φ = 42771652.

The previous prime is 42771647. The next prime is 42771671. The reversal of 42771653 is 35617724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38353249 + 4418404 = 6193^2 + 2102^2 .

It is a cyclic number.

It is not a de Polignac number, because 42771653 - 2¹⁴ = 42755269 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42771683) 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, 21385826 + 21385827.

It is an arithmetic number, because the mean of its divisors is an integer number (21385827).

Almost surely, 2^42771653 is an apocalyptic number.

It is an amenable number.

42771653 is a deficient number, since it is larger than the sum of its proper divisors (1).

42771653 is an equidigital number, since it uses as much as digits as its factorization.

42771653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 35.

The square root of 42771653 is about 6540.0040519865. The cubic root of 42771653 is about 349.7185574201.

The spelling of 42771653 in words is "forty-two million, seven hundred seventy-one thousand, six hundred fifty-three".