42661163 has 2 divisors, whose sum is σ = 42661164. Its totient is φ = 42661162.

The previous prime is 42661153. The next prime is 42661207. The reversal of 42661163 is 36116624.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42661163 - 2⁴ = 42661147 is a prime.

It is a Chen prime.

It is equal to p_2585351 and since 42661163 and 2585351 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (42661103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21330581 + 21330582.

It is an arithmetic number, because the mean of its divisors is an integer number (21330582).

Almost surely, 2^42661163 is an apocalyptic number.

42661163 is a deficient number, since it is larger than the sum of its proper divisors (1).

42661163 is an equidigital number, since it uses as much as digits as its factorization.

42661163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 42661163 is about 6531.5513471150. The cubic root of 42661163 is about 349.4171605744.

Adding to 42661163 its reverse (36116624), we get a palindrome (78777787).

It can be divided in two parts, 42661 and 163, that added together give a palindrome (42824).

The spelling of 42661163 in words is "forty-two million, six hundred sixty-one thousand, one hundred sixty-three".