1424218 has 4 divisors (see below), whose sum is σ = 2136330. Its totient is φ = 712108.

The previous prime is 1424191. The next prime is 1424231. The reversal of 1424218 is 8124241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8124241 = 59 ⋅137699.

It can be written as a sum of positive squares in only one way, i.e., 915849 + 508369 = 957^2 + 713^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 356053 + ... + 356056.

2^1424218 is an apocalyptic number.

1424218 is a deficient number, since it is larger than the sum of its proper divisors (712112).

1424218 is an equidigital number, since it uses as much as digits as its factorization.

1424218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712111.

The product of its digits is 512, while the sum is 22.

The square root of 1424218 is about 1193.4060499260. The cubic root of 1424218 is about 112.5102673757.

Adding to 1424218 its reverse (8124241), we get a palindrome (9548459).

The spelling of 1424218 in words is "one million, four hundred twenty-four thousand, two hundred eighteen".