42171892 has 24 divisors (see below), whose sum is σ = 84551936. Its totient is φ = 18029088.

The previous prime is 42171889. The next prime is 42171893. The reversal of 42171892 is 29817124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42171893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11338 + ... + 14590.

Almost surely, 2^42171892 is an apocalyptic number.

It is an amenable number.

42171892 is an abundant number, since it is smaller than the sum of its proper divisors (42380044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42171892 is a wasteful number, since it uses less digits than its factorization.

42171892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727 (or 3725 counting only the distinct ones).

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

The square root of 42171892 is about 6493.9889128332. The cubic root of 42171892 is about 348.0762263108.

The spelling of 42171892 in words is "forty-two million, one hundred seventy-one thousand, eight hundred ninety-two".