12258421 has 8 divisors (see below), whose sum is σ = 14120960. Its totient is φ = 10423728.

The previous prime is 12258413. The next prime is 12258427. The reversal of 12258421 is 12485221.

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

It is not a de Polignac number, because 12258421 - 2³ = 12258413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12258427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6006 + ... + 7783.

It is an arithmetic number, because the mean of its divisors is an integer number (1765120).

Almost surely, 2^12258421 is an apocalyptic number.

It is an amenable number.

12258421 is a deficient number, since it is larger than the sum of its proper divisors (1862539).

12258421 is a wasteful number, since it uses less digits than its factorization.

12258421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13923.

The product of its digits is 1280, while the sum is 25.

The square root of 12258421 is about 3501.2027933269. The cubic root of 12258421 is about 230.5746249309.

The spelling of 12258421 in words is "twelve million, two hundred fifty-eight thousand, four hundred twenty-one".