42606061 has 2 divisors, whose sum is σ = 42606062. Its totient is φ = 42606060.

The previous prime is 42606049. The next prime is 42606089. The reversal of 42606061 is 16060624.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41409225 + 1196836 = 6435^2 + 1094^2 .

It is a cyclic number.

It is not a de Polignac number, because 42606061 - 2¹⁷ = 42474989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42606001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21303030 + 21303031.

It is an arithmetic number, because the mean of its divisors is an integer number (21303031).

Almost surely, 2^42606061 is an apocalyptic number.

It is an amenable number.

42606061 is a deficient number, since it is larger than the sum of its proper divisors (1).

42606061 is an equidigital number, since it uses as much as digits as its factorization.

42606061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 42606061 is about 6527.3318438701. The cubic root of 42606061 is about 349.2666577250.

Adding to 42606061 its reverse (16060624), we get a palindrome (58666685).

The spelling of 42606061 in words is "forty-two million, six hundred six thousand, sixty-one".