1143075 has 12 divisors (see below), whose sum is σ = 1890008. Its totient is φ = 609600.

The previous prime is 1143073. The next prime is 1143089. The reversal of 1143075 is 5703411.

It is not a de Polignac number, because 1143075 - 2¹ = 1143073 is a prime.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7546 + ... + 7695.

2^1143075 is an apocalyptic number.

1143075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1143075 is a deficient number, since it is larger than the sum of its proper divisors (746933).

1143075 is a wasteful number, since it uses less digits than its factorization.

1143075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15254 (or 15249 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 1143075 is about 1069.1468561428. The cubic root of 1143075 is about 104.5582346752.

Adding to 1143075 its reverse (5703411), we get a palindrome (6846486).

The spelling of 1143075 in words is "one million, one hundred forty-three thousand, seventy-five".