1143075478 has 16 divisors (see below), whose sum is σ = 1817309520. Its totient is φ = 537373696.

The previous prime is 1143075469. The next prime is 1143075487. The reversal of 1143075478 is 8745703411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1143075469) and next prime (1143075487).

It is a self number, because there is not a number n which added to its sum of digits gives 1143075478.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 18150 + ... + 51142.

It is an arithmetic number, because the mean of its divisors is an integer number (113581845).

Almost surely, 2^1143075478 is an apocalyptic number.

1143075478 is a deficient number, since it is larger than the sum of its proper divisors (674234042).

1143075478 is a wasteful number, since it uses less digits than its factorization.

1143075478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34031.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 1143075478 is about 33809.3992552367. The cubic root of 1143075478 is about 1045.5824924963.

Adding to 1143075478 its reverse (8745703411), we get a palindrome (9888778889).

The spelling of 1143075478 in words is "one billion, one hundred forty-three million, seventy-five thousand, four hundred seventy-eight".