871742 has 8 divisors (see below), whose sum is σ = 1339632. Its totient is φ = 425200.

The previous prime is 871727. The next prime is 871763. The reversal of 871742 is 247178.

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

It is a super-2 number, since 2×871742² = 1519868229128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

871742 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5234 + ... + 5397.

It is an arithmetic number, because the mean of its divisors is an integer number (167454).

2⁸⁷¹⁷⁴² is an apocalyptic number.

871742 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

871742 is a deficient number, since it is larger than the sum of its proper divisors (467890).

871742 is a wasteful number, since it uses less digits than its factorization.

871742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10674.

The product of its digits is 3136, while the sum is 29.

The square root of 871742 is about 933.6712483524. The cubic root of 871742 is about 95.5277004520.

The spelling of 871742 in words is "eight hundred seventy-one thousand, seven hundred forty-two".