42871663 has 2 divisors, whose sum is σ = 42871664. Its totient is φ = 42871662.

The previous prime is 42871601. The next prime is 42871687. The reversal of 42871663 is 36617824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42871663 - 2⁹ = 42871151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42871063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21435831 + 21435832.

It is an arithmetic number, because the mean of its divisors is an integer number (21435832).

Almost surely, 2^42871663 is an apocalyptic number.

42871663 is a deficient number, since it is larger than the sum of its proper divisors (1).

42871663 is an equidigital number, since it uses as much as digits as its factorization.

42871663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 42871663 is about 6547.6456073920. The cubic root of 42871663 is about 349.9909194923.

It can be divided in two parts, 42871 and 663, that added together give a palindrome (43534).

The spelling of 42871663 in words is "forty-two million, eight hundred seventy-one thousand, six hundred sixty-three".