402006 has 16 divisors (see below), whose sum is σ = 877248. Its totient is φ = 121800.

The previous prime is 401993. The next prime is 402023. The reversal of 402006 is 600204.

It is a junction number, because it is equal to n+sod(n) for n = 401982 and 402000.

It is a congruent number.

It is an unprimeable number.

402006 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, 2980 + ... + 3111.

It is an arithmetic number, because the mean of its divisors is an integer number (54828).

2⁴⁰²⁰⁰⁶ is an apocalyptic number.

402006 is an abundant number, since it is smaller than the sum of its proper divisors (475242).

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

402006 is a wasteful number, since it uses less digits than its factorization.

402006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6107.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 402006 is about 634.0394309505. The cubic root of 402006 is about 73.8035940994.

The spelling of 402006 in words is "four hundred two thousand, six".