402168 has 32 divisors (see below), whose sum is σ = 1083600. Its totient is φ = 123648.

The previous prime is 402139. The next prime is 402197. The reversal of 402168 is 861204.

It is an interprime number because it is at equal distance from previous prime (402139) and next prime (402197).

It is a congruent number.

It is an unprimeable number.

402168 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 7 ways as a sum of consecutive naturals, for example, 333 + ... + 956.

2⁴⁰²¹⁶⁸ is an apocalyptic number.

It is an amenable number.

402168 is an abundant number, since it is smaller than the sum of its proper divisors (681432).

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

402168 is a wasteful number, since it uses less digits than its factorization.

402168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311 (or 1307 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 402168 is about 634.1671703896. The cubic root of 402168 is about 73.8135065357.

The spelling of 402168 in words is "four hundred two thousand, one hundred sixty-eight".