12421527 has 8 divisors (see below), whose sum is σ = 16617216. Its totient is φ = 8253432.

The previous prime is 12421517. The next prime is 12421537. The reversal of 12421527 is 72512421.

It is an interprime number because it is at equal distance from previous prime (12421517) and next prime (12421537).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12421527 - 2⁷ = 12421399 is a prime.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 12421497 and 12421506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421517) 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, 5823 + ... + 7664.

It is an arithmetic number, because the mean of its divisors is an integer number (2077152).

Almost surely, 2^12421527 is an apocalyptic number.

12421527 is a deficient number, since it is larger than the sum of its proper divisors (4195689).

12421527 is a wasteful number, since it uses less digits than its factorization.

12421527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13797.

The product of its digits is 1120, while the sum is 24.

The square root of 12421527 is about 3524.4186754698. The cubic root of 12421527 is about 231.5927693042.

Adding to 12421527 its reverse (72512421), we get a palindrome (84933948).

The spelling of 12421527 in words is "twelve million, four hundred twenty-one thousand, five hundred twenty-seven".