42871563 has 24 divisors (see below), whose sum is σ = 73851648. Its totient is φ = 23432112.

The previous prime is 42871537. The next prime is 42871573. The reversal of 42871563 is 36517824.

42871563 is a `hidden beast` number, since 4 + 28 + 71 + 563 = 666.

It is not a de Polignac number, because 42871563 - 2⁸ = 42871307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42871573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13345 + ... + 16242.

It is an arithmetic number, because the mean of its divisors is an integer number (3077152).

Almost surely, 2^42871563 is an apocalyptic number.

42871563 is a deficient number, since it is larger than the sum of its proper divisors (30980085).

42871563 is a wasteful number, since it uses less digits than its factorization.

42871563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29623 (or 29620 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 42871563 is about 6547.6379710549. The cubic root of 42871563 is about 349.9906473691.

It can be divided in two parts, 42871 and 563, that added together give a palindrome (43434).

The spelling of 42871563 in words is "forty-two million, eight hundred seventy-one thousand, five hundred sixty-three".