1143130642 has 24 divisors (see below), whose sum is σ = 1832978700. Its totient is φ = 534028320.

The previous prime is 1143130627. The next prime is 1143130661. The reversal of 1143130642 is 2460313411.

It can be written as a sum of positive squares in 2 ways, for example, as 1118835601 + 24295041 = 33449^2 + 4929^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45484 + ... + 65992.

Almost surely, 2^1143130642 is an apocalyptic number.

1143130642 is a deficient number, since it is larger than the sum of its proper divisors (689848058).

1143130642 is a wasteful number, since it uses less digits than its factorization.

1143130642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20602 (or 20571 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1143130642 is about 33810.2150540336. The cubic root of 1143130642 is about 1045.5993119119.

The spelling of 1143130642 in words is "one billion, one hundred forty-three million, one hundred thirty thousand, six hundred forty-two".