1423218 has 8 divisors (see below), whose sum is σ = 2846448. Its totient is φ = 474404.

The previous prime is 1423193. The next prime is 1423231. The reversal of 1423218 is 8123241.

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

1423218 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1423194 and 1423203.

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 in 3 ways as a sum of consecutive naturals, for example, 118596 + ... + 118607.

It is an arithmetic number, because the mean of its divisors is an integer number (355806).

2^1423218 is an apocalyptic number.

1423218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1423218 is a wasteful number, since it uses less digits than its factorization.

1423218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237208.

The product of its digits is 384, while the sum is 21.

The square root of 1423218 is about 1192.9870074733. The cubic root of 1423218 is about 112.4839285684.

Adding to 1423218 its reverse (8123241), we get a palindrome (9546459).

It can be divided in two parts, 14 and 23218, that added together give a palindrome (23232).

The spelling of 1423218 in words is "one million, four hundred twenty-three thousand, two hundred eighteen".