42663587 has 2 divisors, whose sum is σ = 42663588. Its totient is φ = 42663586.

The previous prime is 42663563. The next prime is 42663613. The reversal of 42663587 is 78536624.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42663587 - 2¹⁰ = 42662563 is a prime.

It is a Chen prime.

It is equal to p_2585489 and since 42663587 and 2585489 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (42663287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21331793 + 21331794.

It is an arithmetic number, because the mean of its divisors is an integer number (21331794).

Almost surely, 2^42663587 is an apocalyptic number.

42663587 is a deficient number, since it is larger than the sum of its proper divisors (1).

42663587 is an equidigital number, since it uses as much as digits as its factorization.

42663587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 41.

The square root of 42663587 is about 6531.7369052956. The cubic root of 42663587 is about 349.4237783902.

The spelling of 42663587 in words is "forty-two million, six hundred sixty-three thousand, five hundred eighty-seven".