1129143 has 8 divisors (see below), whose sum is σ = 1522800. Its totient is φ = 744128.

The previous prime is 1129133. The next prime is 1129153. The reversal of 1129143 is 3419211.

It is an interprime number because it is at equal distance from previous prime (1129133) and next prime (1129153).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1129143 - 2⁴ = 1129127 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1848 + ... + 2381.

It is an arithmetic number, because the mean of its divisors is an integer number (190350).

2^1129143 is an apocalyptic number.

1129143 is a deficient number, since it is larger than the sum of its proper divisors (393657).

1129143 is an equidigital number, since it uses as much as digits as its factorization.

1129143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321.

The product of its digits is 216, while the sum is 21.

The square root of 1129143 is about 1062.6114059241. The cubic root of 1129143 is about 104.1317056720.

The spelling of 1129143 in words is "one million, one hundred twenty-nine thousand, one hundred forty-three".