12488421 has 32 divisors (see below), whose sum is σ = 19502208. Its totient is φ = 7024640.

The previous prime is 12488407. The next prime is 12488423.

12488421 = T₂₅₃ + T₂₅₄ + ... + T₄₄₉.

12488421 is nontrivially palindromic in base 10.

It is a 6-Lehmer number, since φ(12488421) divides (12488421-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 12488421 - 2⁵ = 12488389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12488423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63295 + ... + 63491.

It is an arithmetic number, because the mean of its divisors is an integer number (609444).

Almost surely, 2^12488421 is an apocalyptic number.

12488421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12488421 is a deficient number, since it is larger than the sum of its proper divisors (7013787).

12488421 is a wasteful number, since it uses less digits than its factorization.

12488421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341.

The product of its digits is 4096, while the sum is 30.

The square root of 12488421 is about 3533.8960086567. The cubic root of 12488421 is about 232.0077595998.

It can be divided in two parts, 1248 and 8421, that added together give a palindrome (9669).

The spelling of 12488421 in words is "twelve million, four hundred eighty-eight thousand, four hundred twenty-one".