402170 has 16 divisors (see below), whose sum is σ = 731808. Its totient is φ = 159120.

The previous prime is 402139. The next prime is 402197. The reversal of 402170 is 71204.

It is a happy number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 402170.

It is an unprimeable number.

402170 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, 1157 + ... + 1463.

It is an arithmetic number, because the mean of its divisors is an integer number (45738).

2⁴⁰²¹⁷⁰ is an apocalyptic number.

402170 is a deficient number, since it is larger than the sum of its proper divisors (329638).

402170 is a wasteful number, since it uses less digits than its factorization.

402170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 402170 is about 634.1687472590. The cubic root of 402170 is about 73.8136288948.

Adding to 402170 its reverse (71204), we get a palindrome (473374).

The spelling of 402170 in words is "four hundred two thousand, one hundred seventy", and thus it is an iban number.