1143203242 has 4 divisors (see below), whose sum is σ = 1714804866. Its totient is φ = 571601620.

The previous prime is 1143203207. The next prime is 1143203317. The reversal of 1143203242 is 2423023411.

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., 724632561 + 418570681 = 26919^2 + 20459^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285800809 + ... + 285800812.

Almost surely, 2^1143203242 is an apocalyptic number.

1143203242 is a deficient number, since it is larger than the sum of its proper divisors (571601624).

1143203242 is an equidigital number, since it uses as much as digits as its factorization.

1143203242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571601623.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1143203242 is about 33811.2886770085. The cubic root of 1143203242 is about 1045.6214467115.

Adding to 1143203242 its reverse (2423023411), we get a palindrome (3566226653).

The spelling of 1143203242 in words is "one billion, one hundred forty-three million, two hundred three thousand, two hundred forty-two".