42555061 has 2 divisors, whose sum is σ = 42555062. Its totient is φ = 42555060.

The previous prime is 42555049. The next prime is 42555067. The reversal of 42555061 is 16055524.

42555061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33062500 + 9492561 = 5750^2 + 3081^2 .

It is a cyclic number.

It is not a de Polignac number, because 42555061 - 2⁷ = 42554933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42555067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21277530 + 21277531.

It is an arithmetic number, because the mean of its divisors is an integer number (21277531).

Almost surely, 2^42555061 is an apocalyptic number.

It is an amenable number.

42555061 is a deficient number, since it is larger than the sum of its proper divisors (1).

42555061 is an equidigital number, since it uses as much as digits as its factorization.

42555061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 42555061 is about 6523.4240242376. The cubic root of 42555061 is about 349.1272431976.

It can be divided in two parts, 4255 and 5061, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 42555061 in words is "forty-two million, five hundred fifty-five thousand, sixty-one".