42660143 has 2 divisors, whose sum is σ = 42660144. Its totient is φ = 42660142.

The previous prime is 42660139. The next prime is 42660169. The reversal of 42660143 is 34106624.

It is an a-pointer prime, because the next prime (42660169) can be obtained adding 42660143 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42660143 - 2² = 42660139 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42660113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21330071 + 21330072.

It is an arithmetic number, because the mean of its divisors is an integer number (21330072).

Almost surely, 2^42660143 is an apocalyptic number.

42660143 is a deficient number, since it is larger than the sum of its proper divisors (1).

42660143 is an equidigital number, since it uses as much as digits as its factorization.

42660143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 42660143 is about 6531.4732641266. The cubic root of 42660143 is about 349.4143757750.

Adding to 42660143 its reverse (34106624), we get a palindrome (76766767).

The spelling of 42660143 in words is "forty-two million, six hundred sixty thousand, one hundred forty-three".