12421065 has 8 divisors (see below), whose sum is σ = 19873728. Its totient is φ = 6624560.

The previous prime is 12421061. The next prime is 12421099. The reversal of 12421065 is 56012421.

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

It is not a de Polignac number, because 12421065 - 2² = 12421061 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12421061) 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, 414021 + ... + 414050.

It is an arithmetic number, because the mean of its divisors is an integer number (2484216).

Almost surely, 2^12421065 is an apocalyptic number.

12421065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12421065 is a deficient number, since it is larger than the sum of its proper divisors (7452663).

12421065 is an equidigital number, since it uses as much as digits as its factorization.

12421065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828079.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 12421065 is about 3524.3531321364. The cubic root of 12421065 is about 231.5898980205.

Adding to 12421065 its reverse (56012421), we get a palindrome (68433486).

The spelling of 12421065 in words is "twelve million, four hundred twenty-one thousand, sixty-five".