1243444 has 6 divisors (see below), whose sum is σ = 2176034. Its totient is φ = 621720.

The previous prime is 1243439. The next prime is 1243471. The reversal of 1243444 is 4443421.

It can be written as a sum of positive squares in only one way, i.e., 1127844 + 115600 = 1062^2 + 340^2 .

It is a super-2 number, since 2×1243444² = 3092305962272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 155427 + ... + 155434.

2^1243444 is an apocalyptic number.

It is an amenable number.

1243444 is a deficient number, since it is larger than the sum of its proper divisors (932590).

1243444 is a wasteful number, since it uses less digits than its factorization.

1243444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310865 (or 310863 counting only the distinct ones).

The product of its digits is 1536, while the sum is 22.

The square root of 1243444 is about 1115.0982019535. The cubic root of 1243444 is about 107.5330779766.

Adding to 1243444 its reverse (4443421), we get a palindrome (5686865).

The spelling of 1243444 in words is "one million, two hundred forty-three thousand, four hundred forty-four".