12127320 has 160 divisors (see below), whose sum is σ = 43124400. Its totient is φ = 3048192.

The previous prime is 12127319. The next prime is 12127321. The reversal of 12127320 is 2372121.

It is an interprime number because it is at equal distance from previous prime (12127319) and next prime (12127321).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12127293 and 12127302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12127321) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 61462 + ... + 61658.

Almost surely, 2^12127320 is an apocalyptic number.

12127320 is a gapful number since it is divisible by the number (10) 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 12127320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21562200).

12127320 is an abundant number, since it is smaller than the sum of its proper divisors (30997080).

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

12127320 is a wasteful number, since it uses less digits than its factorization.

12127320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 12127320 is about 3482.4301859477. The cubic root of 12127320 is about 229.7496961928.

Adding to 12127320 its reverse (2372121), we get a palindrome (14499441).

The spelling of 12127320 in words is "twelve million, one hundred twenty-seven thousand, three hundred twenty".