1143467 has 4 divisors (see below), whose sum is σ = 1231440. Its totient is φ = 1055496.

The previous prime is 1143433. The next prime is 1143469. The reversal of 1143467 is 7643411.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-1143467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143469) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 43967 + ... + 43992.

It is an arithmetic number, because the mean of its divisors is an integer number (307860).

2^1143467 is an apocalyptic number.

1143467 is a deficient number, since it is larger than the sum of its proper divisors (87973).

1143467 is an equidigital number, since it uses as much as digits as its factorization.

1143467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87972.

The product of its digits is 2016, while the sum is 26.

The square root of 1143467 is about 1069.3301641682. The cubic root of 1143467 is about 104.5701855223.

Adding to 1143467 its reverse (7643411), we get a palindrome (8786878).

The spelling of 1143467 in words is "one million, one hundred forty-three thousand, four hundred sixty-seven".