1243436 has 12 divisors (see below), whose sum is σ = 2290680. Its totient is φ = 588960.

The previous prime is 1243427. The next prime is 1243439. The reversal of 1243436 is 6343421.

It is a happy number.

It is a super-2 number, since 2×1243436² = 3092266172192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1243439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8105 + ... + 8256.

It is an arithmetic number, because the mean of its divisors is an integer number (190890).

2^1243436 is an apocalyptic number.

It is an amenable number.

1243436 is a deficient number, since it is larger than the sum of its proper divisors (1047244).

1243436 is a wasteful number, since it uses less digits than its factorization.

1243436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16384 (or 16382 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 1243436 is about 1115.0946148197. The cubic root of 1243436 is about 107.5328473626.

Adding to 1243436 its reverse (6343421), we get a palindrome (7586857).

The spelling of 1243436 in words is "one million, two hundred forty-three thousand, four hundred thirty-six".