42871912 has 16 divisors (see below), whose sum is σ = 81902340. Its totient is φ = 21031296.

The previous prime is 42871897. The next prime is 42871949. The reversal of 42871912 is 21917824.

It can be written as a sum of positive squares in 2 ways, for example, as 40780996 + 2090916 = 6386^2 + 1446^2 .

It is a plaindrome in base 11.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50133 + ... + 50980.

Almost surely, 2^42871912 is an apocalyptic number.

It is an amenable number.

42871912 is a deficient number, since it is larger than the sum of its proper divisors (39030428).

42871912 is a wasteful number, since it uses less digits than its factorization.

42871912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101172 (or 101168 counting only the distinct ones).

The product of its digits is 8064, while the sum is 34.

The square root of 42871912 is about 6547.6646218327. The cubic root of 42871912 is about 349.9915970772.

The spelling of 42871912 in words is "forty-two million, eight hundred seventy-one thousand, nine hundred twelve".