402871 has 8 divisors (see below), whose sum is σ = 467840. Its totient is φ = 339768.

The previous prime is 402869. The next prime is 402881. The reversal of 402871 is 178204.

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

It is a cyclic number.

It is not a de Polignac number, because 402871 - 2¹ = 402869 is a prime.

It is a Duffinian number.

402871 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402851) 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 7 ways as a sum of consecutive naturals, for example, 40 + ... + 898.

It is an arithmetic number, because the mean of its divisors is an integer number (58480).

2⁴⁰²⁸⁷¹ is an apocalyptic number.

402871 is a deficient number, since it is larger than the sum of its proper divisors (64969).

402871 is an equidigital number, since it uses as much as digits as its factorization.

402871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 402871 is about 634.7211986376. The cubic root of 402871 is about 73.8564908017.

The spelling of 402871 in words is "four hundred two thousand, eight hundred seventy-one".