1243408 has 10 divisors (see below), whose sum is σ = 2409134. Its totient is φ = 621696.

The previous prime is 1243393. The next prime is 1243421. The reversal of 1243408 is 8043421.

It can be written as a sum of positive squares in only one way, i.e., 1056784 + 186624 = 1028^2 + 432^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38841 + ... + 38872.

2^1243408 is an apocalyptic number.

It is an amenable number.

1243408 is a deficient number, since it is larger than the sum of its proper divisors (1165726).

1243408 is an equidigital number, since it uses as much as digits as its factorization.

1243408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77721 (or 77715 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1243408 is about 1115.0820597606. The cubic root of 1243408 is about 107.5320402061.

Adding to 1243408 its reverse (8043421), we get a palindrome (9286829).

The spelling of 1243408 in words is "one million, two hundred forty-three thousand, four hundred eight".