42566101 has 2 divisors, whose sum is σ = 42566102. Its totient is φ = 42566100.

The previous prime is 42566093. The next prime is 42566141. The reversal of 42566101 is 10166524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25010001 + 17556100 = 5001^2 + 4190^2 .

It is a cyclic number.

It is not a de Polignac number, because 42566101 - 2³ = 42566093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42566141) 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, 21283050 + 21283051.

It is an arithmetic number, because the mean of its divisors is an integer number (21283051).

Almost surely, 2^42566101 is an apocalyptic number.

It is an amenable number.

42566101 is a deficient number, since it is larger than the sum of its proper divisors (1).

42566101 is an equidigital number, since it uses as much as digits as its factorization.

42566101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 42566101 is about 6524.2701507525. The cubic root of 42566101 is about 349.1574317848.

The spelling of 42566101 in words is "forty-two million, five hundred sixty-six thousand, one hundred one".