123530508 has 66 divisors (see below), whose sum is σ = 324885764. Its totient is φ = 41098104.

The previous prime is 123530503. The next prime is 123530521. The reversal of 123530508 is 805035321.

123530508 is a `hidden beast` number, since 123 + 5 + 30 + 508 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (123530503) by changing a digit.

It is a polite number, since it can be written in 21 ways as a sum of consecutive naturals, for example, 235935 + ... + 236457.

Almost surely, 2^123530508 is an apocalyptic number.

123530508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123530508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162442882).

123530508 is an abundant number, since it is smaller than the sum of its proper divisors (201355256).

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

123530508 is an frugal number, since it uses more digits than its factorization.

123530508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 123530508 is about 11114.4279205005. The cubic root of 123530508 is about 498.0329489014.

Adding to 123530508 its reverse (805035321), we get a palindrome (928565829).

The spelling of 123530508 in words is "one hundred twenty-three million, five hundred thirty thousand, five hundred eight".