1143440002 has 4 divisors (see below), whose sum is σ = 1715160006. Its totient is φ = 571720000.

The previous prime is 1143439981. The next prime is 1143440003. The reversal of 1143440002 is 2000443411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1137780361 + 5659641 = 33731^2 + 2379^2 .

It is not an unprimeable number, because it can be changed into a prime (1143440003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285859999 + ... + 285860002.

Almost surely, 2^1143440002 is an apocalyptic number.

1143440002 is a deficient number, since it is larger than the sum of its proper divisors (571720004).

1143440002 is an equidigital number, since it uses as much as digits as its factorization.

1143440002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571720003.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1143440002 is about 33814.7896932688. The cubic root of 1143440002 is about 1045.6936252582.

Adding to 1143440002 its reverse (2000443411), we get a palindrome (3143883413).

The spelling of 1143440002 in words is "one billion, one hundred forty-three million, four hundred forty thousand, two".