123116560 has 40 divisors (see below), whose sum is σ = 327139776. Its totient is φ = 42211200.

The previous prime is 123116519. The next prime is 123116569. The reversal of 123116560 is 65611321.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (123116569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109366 + ... + 110485.

Almost surely, 2^123116560 is an apocalyptic number.

123116560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123116560 is an abundant number, since it is smaller than the sum of its proper divisors (204023216).

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

123116560 is a wasteful number, since it uses less digits than its factorization.

123116560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219871 (or 219865 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 123116560 is about 11095.7901926812. The cubic root of 123116560 is about 497.4760272280.

Adding to 123116560 its reverse (65611321), we get a palindrome (188727881).

The spelling of 123116560 in words is "one hundred twenty-three million, one hundred sixteen thousand, five hundred sixty".