42171234 has 16 divisors (see below), whose sum is σ = 96391488. Its totient is φ = 12048912.

The previous prime is 42171229. The next prime is 42171281. The reversal of 42171234 is 43217124.

It is a happy number.

42171234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501997 + ... + 502080.

It is an arithmetic number, because the mean of its divisors is an integer number (6024468).

Almost surely, 2^42171234 is an apocalyptic number.

42171234 is an abundant number, since it is smaller than the sum of its proper divisors (54220254).

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

42171234 is a wasteful number, since it uses less digits than its factorization.

42171234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004089.

The product of its digits is 1344, while the sum is 24.

The square root of 42171234 is about 6493.9382503994. The cubic root of 42171234 is about 348.0744159791.

Adding to 42171234 its reverse (43217124), we get a palindrome (85388358).

The spelling of 42171234 in words is "forty-two million, one hundred seventy-one thousand, two hundred thirty-four".