170420 has 12 divisors (see below), whose sum is σ = 357924. Its totient is φ = 68160.

The previous prime is 170413. The next prime is 170441. The reversal of 170420 is 24071.

It is a happy number.

170420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 71824 + 98596 = 268^2 + 314^2 .

It is a junction number, because it is equal to n+sod(n) for n = 170395 and 170404.

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 170420.

It is an unprimeable number.

170420 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 3 ways as a sum of consecutive naturals, for example, 4241 + ... + 4280.

It is an arithmetic number, because the mean of its divisors is an integer number (29827).

2¹⁷⁰⁴²⁰ is an apocalyptic number.

170420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

170420 is an abundant number, since it is smaller than the sum of its proper divisors (187504).

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

170420 is a wasteful number, since it uses less digits than its factorization.

170420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8530 (or 8528 counting only the distinct ones).

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

The square root of 170420 is about 412.8195731794. The cubic root of 170420 is about 55.4421657641.

Adding to 170420 its reverse (24071), we get a palindrome (194491).

The spelling of 170420 in words is "one hundred seventy thousand, four hundred twenty", and thus it is an iban number.