123170 has 16 divisors (see below), whose sum is σ = 225720. Its totient is φ = 48384.

The previous prime is 123169. The next prime is 123191. The reversal of 123170 is 71321.

It can be written as a sum of positive squares in 4 ways, for example, as 73441 + 49729 = 271^2 + 223^2 .

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1034 + ... + 1146.

2¹²³¹⁷⁰ is an apocalyptic number.

123170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123170 is a deficient number, since it is larger than the sum of its proper divisors (102550).

123170 is a wasteful number, since it uses less digits than its factorization.

123170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 123170 is about 350.9558376776. The cubic root of 123170 is about 49.7547994999.

Adding to 123170 its reverse (71321), we get a palindrome (194491).

It can be divided in two parts, 123 and 170, that multiplied together give a triangular number (20910 = T₂₀₄).

The spelling of 123170 in words is "one hundred twenty-three thousand, one hundred seventy", and thus it is an iban number.