12420215 has 8 divisors (see below), whose sum is σ = 14930448. Its totient is φ = 9918720.

The previous prime is 12420211. The next prime is 12420227. The reversal of 12420215 is 51202421.

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

It is not a de Polignac number, because 12420215 - 2² = 12420211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12420193 and 12420202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420211) 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, 1520 + ... + 5210.

It is an arithmetic number, because the mean of its divisors is an integer number (1866306).

Almost surely, 2^12420215 is an apocalyptic number.

12420215 is a deficient number, since it is larger than the sum of its proper divisors (2510233).

12420215 is an equidigital number, since it uses as much as digits as its factorization.

12420215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4369.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 12420215 is about 3524.2325405682. The cubic root of 12420215 is about 231.5846151696.

Adding to 12420215 its reverse (51202421), we get a palindrome (63622636).

The spelling of 12420215 in words is "twelve million, four hundred twenty thousand, two hundred fifteen".