12427520 has 144 divisors (see below), whose sum is σ = 36301440. Its totient is φ = 3981312.

The previous prime is 12427511. The next prime is 12427579. The reversal of 12427520 is 2572421.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170204 + ... + 170276.

Almost surely, 2^12427520 is an apocalyptic number.

12427520 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 12427520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18150720).

12427520 is an abundant number, since it is smaller than the sum of its proper divisors (23873920).

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

12427520 is an equidigital number, since it uses as much as digits as its factorization.

12427520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 12427520 is about 3525.2687840787. The cubic root of 12427520 is about 231.6300087492.

Adding to 12427520 its reverse (2572421), we get a palindrome (14999941).

The spelling of 12427520 in words is "twelve million, four hundred twenty-seven thousand, five hundred twenty".