1244004243 has 16 divisors (see below), whose sum is σ = 1744429056. Its totient is φ = 787026240.

The previous prime is 1244004227. The next prime is 1244004259. The reversal of 1244004243 is 3424004421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1244004227) and next prime (1244004259).

It is not a de Polignac number, because 1244004243 - 2⁴ = 1244004227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1244004263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62218 + ... + 79743.

It is an arithmetic number, because the mean of its divisors is an integer number (109026816).

Almost surely, 2^1244004243 is an apocalyptic number.

1244004243 is a deficient number, since it is larger than the sum of its proper divisors (500424813).

1244004243 is a wasteful number, since it uses less digits than its factorization.

1244004243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142114.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1244004243 is about 35270.4443266597. Note that the first 3 decimals coincide. The cubic root of 1244004243 is about 1075.4922549602.

Adding to 1244004243 its reverse (3424004421), we get a palindrome (4668008664).

The spelling of 1244004243 in words is "one billion, two hundred forty-four million, four thousand, two hundred forty-three".