12127456 has 48 divisors (see below), whose sum is σ = 26345088. Its totient is φ = 5449600.

The previous prime is 12127447. The next prime is 12127459. The reversal of 12127456 is 65472121.

It is a super-4 number, since 4×12127456⁴ (a number of 29 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12127459) 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, 45981 + ... + 46243.

It is an arithmetic number, because the mean of its divisors is an integer number (548856).

Almost surely, 2^12127456 is an apocalyptic number.

12127456 is a gapful number since it is divisible by the number (16) 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 12127456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13172544).

12127456 is an abundant number, since it is smaller than the sum of its proper divisors (14217632).

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

12127456 is a wasteful number, since it uses less digits than its factorization.

12127456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 407 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 12127456 is about 3482.4497124869. The cubic root of 12127456 is about 229.7505550207.

Adding to 12127456 its reverse (65472121), we get a palindrome (77599577).

It can be divided in two parts, 1212 and 7456, that added together give a palindrome (8668).

The spelling of 12127456 in words is "twelve million, one hundred twenty-seven thousand, four hundred fifty-six".