7871142 has 8 divisors (see below), whose sum is σ = 15742296. Its totient is φ = 2623712.

The previous prime is 7871141. The next prime is 7871159. The reversal of 7871142 is 2411787.

It is a sphenic number, since it is the product of 3 distinct primes.

7871142 is an admirable number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7871141) by changing a digit.

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, 655923 + ... + 655934.

It is an arithmetic number, because the mean of its divisors is an integer number (1967787).

Almost surely, 2^7871142 is an apocalyptic number.

7871142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7871142 is a wasteful number, since it uses less digits than its factorization.

7871142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311862.

The product of its digits is 3136, while the sum is 30.

The square root of 7871142 is about 2805.5555599560. Note that the first 5 decimals coincide. The cubic root of 7871142 is about 198.9203657699.

The spelling of 7871142 in words is "seven million, eight hundred seventy-one thousand, one hundred forty-two".