123560 has 16 divisors (see below), whose sum is σ = 278100. Its totient is φ = 49408.

The previous prime is 123553. The next prime is 123581. The reversal of 123560 is 65321.

It can be written as a sum of positive squares in 2 ways, for example, as 119716 + 3844 = 346^2 + 62^2 .

It is an unprimeable number.

123560 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, 1505 + ... + 1584.

2¹²³⁵⁶⁰ is an apocalyptic number.

123560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123560 is an abundant number, since it is smaller than the sum of its proper divisors (154540).

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

123560 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 8 representation: 123560 = (361250)₈.

123560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3100 (or 3096 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 123560 is about 351.5110240092. The cubic root of 123560 is about 49.8072579649.

Adding to 123560 its reverse (65321), we get a palindrome (188881).

The spelling of 123560 in words is "one hundred twenty-three thousand, five hundred sixty".