402185 has 8 divisors (see below), whose sum is σ = 551616. Its totient is φ = 275760.

The previous prime is 402139. The next prime is 402197. The reversal of 402185 is 581204.

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

It is not a de Polignac number, because 402185 - 2¹⁰ = 401161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5711 + ... + 5780.

It is an arithmetic number, because the mean of its divisors is an integer number (68952).

2⁴⁰²¹⁸⁵ is an apocalyptic number.

It is an amenable number.

402185 is a deficient number, since it is larger than the sum of its proper divisors (149431).

402185 is a wasteful number, since it uses less digits than its factorization.

402185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11503.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 402185 is about 634.1805736539. The cubic root of 402185 is about 73.8145465753.

Adding to 402185 its reverse (581204), we get a palindrome (983389).

The spelling of 402185 in words is "four hundred two thousand, one hundred eighty-five".