1142441643 has 16 divisors (see below), whose sum is σ = 1777904640. Its totient is φ = 638933376.

The previous prime is 1142441627. The next prime is 1142441669. The reversal of 1142441643 is 3461442411.

It is not a de Polignac number, because 1142441643 - 2⁴ = 1142441627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1142441643.

It is not an unprimeable number, because it can be changed into a prime (1142441623) 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, 577758 + ... + 579731.

It is an arithmetic number, because the mean of its divisors is an integer number (111119040).

Almost surely, 2^1142441643 is an apocalyptic number.

1142441643 is a deficient number, since it is larger than the sum of its proper divisors (635462997).

1142441643 is a wasteful number, since it uses less digits than its factorization.

1142441643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157546.

The product of its digits is 9216, while the sum is 30.

The square root of 1142441643 is about 33800.0243047250. The cubic root of 1142441643 is about 1045.3891983748.

The spelling of 1142441643 in words is "one billion, one hundred forty-two million, four hundred forty-one thousand, six hundred forty-three".