1143530 has 16 divisors (see below), whose sum is σ = 2073384. Its totient is φ = 454080.

The previous prime is 1143529. The next prime is 1143551. The reversal of 1143530 is 353411.

It can be written as a sum of positive squares in 4 ways, for example, as 1138489 + 5041 = 1067^2 + 71^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1143499 and 1143508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1400 + ... + 2060.

2^1143530 is an apocalyptic number.

1143530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1143530 is a deficient number, since it is larger than the sum of its proper divisors (929854).

1143530 is a wasteful number, since it uses less digits than its factorization.

1143530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 1143530 is about 1069.3596214558. The cubic root of 1143530 is about 104.5721059394.

Adding to 1143530 its reverse (353411), we get a palindrome (1496941).

The spelling of 1143530 in words is "one million, one hundred forty-three thousand, five hundred thirty".