1243218 has 16 divisors (see below), whose sum is σ = 2497536. Its totient is φ = 412560.

The previous prime is 1243211. The next prime is 1243271. The reversal of 1243218 is 8123421.

It is a junction number, because it is equal to n+sod(n) for n = 1243194 and 1243203.

It is not an unprimeable number, because it can be changed into a prime (1243211) 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, 2028 + ... + 2568.

It is an arithmetic number, because the mean of its divisors is an integer number (156096).

2^1243218 is an apocalyptic number.

1243218 is an abundant number, since it is smaller than the sum of its proper divisors (1254318).

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

1243218 is a wasteful number, since it uses less digits than its factorization.

1243218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929.

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

The square root of 1243218 is about 1114.9968609821. The cubic root of 1243218 is about 107.5265627527.

Adding to 1243218 its reverse (8123421), we get a palindrome (9366639).

The spelling of 1243218 in words is "one million, two hundred forty-three thousand, two hundred eighteen".