1143404442 has 24 divisors (see below), whose sum is σ = 2501432544. Its totient is φ = 377433864.

The previous prime is 1143404429. The next prime is 1143404447. The reversal of 1143404442 is 2444043411.

It is not an unprimeable number, because it can be changed into a prime (1143404447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 306508 + ... + 310215.

It is an arithmetic number, because the mean of its divisors is an integer number (104226356).

Almost surely, 2^1143404442 is an apocalyptic number.

1143404442 is an abundant number, since it is smaller than the sum of its proper divisors (1358028102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143404442 is a wasteful number, since it uses less digits than its factorization.

1143404442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616834 (or 616831 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 1143404442 is about 33814.2638837518. The cubic root of 1143404442 is about 1045.6827850885.

Adding to 1143404442 its reverse (2444043411), we get a palindrome (3587447853).

The spelling of 1143404442 in words is "one billion, one hundred forty-three million, four hundred four thousand, four hundred forty-two".