1143420442 has 8 divisors (see below), whose sum is σ = 1816020756. Its totient is φ = 538080192.

The previous prime is 1143420433. The next prime is 1143420451. The reversal of 1143420442 is 2440243411.

It is an interprime number because it is at equal distance from previous prime (1143420433) and next prime (1143420451).

It can be written as a sum of positive squares in 2 ways, for example, as 1071187441 + 72233001 = 32729^2 + 8499^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16814973 + ... + 16815040.

Almost surely, 2^1143420442 is an apocalyptic number.

1143420442 is a deficient number, since it is larger than the sum of its proper divisors (672600314).

1143420442 is a wasteful number, since it uses less digits than its factorization.

1143420442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33630032.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1143420442 is about 33814.5004694732. The cubic root of 1143420442 is about 1045.6876625830.

Adding to 1143420442 its reverse (2440243411), we get a palindrome (3583663853).

The spelling of 1143420442 in words is "one billion, one hundred forty-three million, four hundred twenty thousand, four hundred forty-two".