871142 has 4 divisors (see below), whose sum is σ = 1306716. Its totient is φ = 435570.

The previous prime is 871103. The next prime is 871147. The reversal of 871142 is 241178.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871147) by changing a digit.

871142 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 as a sum of consecutive naturals, namely, 217784 + ... + 217787.

It is an arithmetic number, because the mean of its divisors is an integer number (326679).

2⁸⁷¹¹⁴² is an apocalyptic number.

871142 is a deficient number, since it is larger than the sum of its proper divisors (435574).

871142 is a wasteful number, since it uses less digits than its factorization.

871142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435573.

The product of its digits is 448, while the sum is 23.

The square root of 871142 is about 933.3498808057. The cubic root of 871142 is about 95.5057789144.

The spelling of 871142 in words is "eight hundred seventy-one thousand, one hundred forty-two".