42261061 has 2 divisors, whose sum is σ = 42261062. Its totient is φ = 42261060.

The previous prime is 42261053. The next prime is 42261071. The reversal of 42261061 is 16016224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23338561 + 18922500 = 4831^2 + 4350^2 .

It is a cyclic number.

It is not a de Polignac number, because 42261061 - 2³ = 42261053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42261001) 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, 21130530 + 21130531.

It is an arithmetic number, because the mean of its divisors is an integer number (21130531).

Almost surely, 2^42261061 is an apocalyptic number.

It is an amenable number.

42261061 is a deficient number, since it is larger than the sum of its proper divisors (1).

42261061 is an equidigital number, since it uses as much as digits as its factorization.

42261061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 42261061 is about 6500.8507904735. The cubic root of 42261061 is about 348.3213797983.

Adding to 42261061 its reverse (16016224), we get a palindrome (58277285).

The spelling of 42261061 in words is "forty-two million, two hundred sixty-one thousand, sixty-one".