1143442330 has 16 divisors (see below), whose sum is σ = 2058945480. Its totient is φ = 457210432.

The previous prime is 1143442327. The next prime is 1143442331. The reversal of 1143442330 is 332443411.

It can be written as a sum of positive squares in 4 ways, for example, as 515789521 + 627652809 = 22711^2 + 25053^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1143442295 and 1143442304.

It is not an unprimeable number, because it can be changed into a prime (1143442331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10236 + ... + 48904.

Almost surely, 2^1143442330 is an apocalyptic number.

1143442330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1143442330 is a deficient number, since it is larger than the sum of its proper divisors (915503150).

1143442330 is a wasteful number, since it uses less digits than its factorization.

1143442330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41633.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 1143442330 is about 33814.8241160589. The cubic root of 1143442330 is about 1045.6943349217.

Adding to 1143442330 its reverse (332443411), we get a palindrome (1475885741).

The spelling of 1143442330 in words is "one billion, one hundred forty-three million, four hundred forty-two thousand, three hundred thirty".