1244144 has 20 divisors (see below), whose sum is σ = 2630040. Its totient is φ = 565440.

The previous prime is 1244143. The next prime is 1244149. The reversal of 1244144 is 4414421.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244141) by changing a digit.

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, 3359 + ... + 3710.

It is an arithmetic number, because the mean of its divisors is an integer number (131502).

2^1244144 is an apocalyptic number.

It is an amenable number.

1244144 is an abundant number, since it is smaller than the sum of its proper divisors (1385896).

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

1244144 is a wasteful number, since it uses less digits than its factorization.

1244144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7088 (or 7082 counting only the distinct ones).

The product of its digits is 512, while the sum is 20.

The square root of 1244144 is about 1115.4120314933. The cubic root of 1244144 is about 107.5532528655.

Adding to 1244144 its reverse (4414421), we get a palindrome (5658565).

The spelling of 1244144 in words is "one million, two hundred forty-four thousand, one hundred forty-four".