42606261 has 6 divisors (see below), whose sum is σ = 61542390. Its totient is φ = 28404168.

The previous prime is 42606253. The next prime is 42606283. The reversal of 42606261 is 16260624.

It is a happy number.

42606261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 42497361 + 108900 = 6519^2 + 330^2 .

It is not a de Polignac number, because 42606261 - 2³ = 42606253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42606211) 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 in 5 ways as a sum of consecutive naturals, for example, 2367006 + ... + 2367023.

It is an arithmetic number, because the mean of its divisors is an integer number (10257065).

Almost surely, 2^42606261 is an apocalyptic number.

It is an amenable number.

42606261 is a deficient number, since it is larger than the sum of its proper divisors (18936129).

42606261 is a wasteful number, since it uses less digits than its factorization.

42606261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4734035 (or 4734032 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 42606261 is about 6527.3471640476. The cubic root of 42606261 is about 349.2672042296.

Adding to 42606261 its reverse (16260624), we get a palindrome (58866885).

The spelling of 42606261 in words is "forty-two million, six hundred six thousand, two hundred sixty-one".