1143578 has 4 divisors (see below), whose sum is σ = 1715370. Its totient is φ = 571788.

The previous prime is 1143577. The next prime is 1143587. The reversal of 1143578 is 8753411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8753411 = 829 ⋅10559.

It can be written as a sum of positive squares in only one way, i.e., 635209 + 508369 = 797^2 + 713^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1143578.

It is not an unprimeable number, because it can be changed into a prime (1143577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285893 + ... + 285896.

2^1143578 is an apocalyptic number.

1143578 is a deficient number, since it is larger than the sum of its proper divisors (571792).

1143578 is an equidigital number, since it uses as much as digits as its factorization.

1143578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571791.

The product of its digits is 3360, while the sum is 29.

The square root of 1143578 is about 1069.3820645588. The cubic root of 1143578 is about 104.5735690670.

Adding to 1143578 its reverse (8753411), we get a palindrome (9896989).

The spelling of 1143578 in words is "one million, one hundred forty-three thousand, five hundred seventy-eight".