42639163 has 12 divisors (see below), whose sum is σ = 50117592. Its totient is φ = 36167040.

The previous prime is 42639151. The next prime is 42639169. The reversal of 42639163 is 36193624.

It is a happy number.

It is not a de Polignac number, because 42639163 - 2¹³ = 42630971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42639169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 268 + ... + 9238.

It is an arithmetic number, because the mean of its divisors is an integer number (4176466).

Almost surely, 2^42639163 is an apocalyptic number.

42639163 is a deficient number, since it is larger than the sum of its proper divisors (7478429).

42639163 is an equidigital number, since it uses as much as digits as its factorization.

42639163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9082 (or 9075 counting only the distinct ones).

The product of its digits is 23328, while the sum is 34.

The square root of 42639163 is about 6529.8669971141. The cubic root of 42639163 is about 349.3570864244.

The spelling of 42639163 in words is "forty-two million, six hundred thirty-nine thousand, one hundred sixty-three".