402117 has 4 divisors (see below), whose sum is σ = 536160. Its totient is φ = 268076.

The previous prime is 402107. The next prime is 402131. The reversal of 402117 is 711204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402117 - 2⁶ = 402053 is a prime.

It is a D-number.

402117 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 402096 and 402105.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 402117.

It is not an unprimeable number, because it can be changed into a prime (402107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67017 + ... + 67022.

It is an arithmetic number, because the mean of its divisors is an integer number (134040).

2⁴⁰²¹¹⁷ is an apocalyptic number.

It is an amenable number.

402117 is a deficient number, since it is larger than the sum of its proper divisors (134043).

402117 is a wasteful number, since it uses less digits than its factorization.

402117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134042.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 402117 is about 634.1269588970. The cubic root of 402117 is about 73.8103862410.

The spelling of 402117 in words is "four hundred two thousand, one hundred seventeen", and thus it is an iban number.