1129943 has 4 divisors (see below), whose sum is σ = 1160520. Its totient is φ = 1099368.

The previous prime is 1129897. The next prime is 1129951. The reversal of 1129943 is 3499211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1129943 - 2¹⁶ = 1064407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15233 + ... + 15306.

It is an arithmetic number, because the mean of its divisors is an integer number (290130).

2^1129943 is an apocalyptic number.

1129943 is a deficient number, since it is larger than the sum of its proper divisors (30577).

1129943 is an equidigital number, since it uses as much as digits as its factorization.

1129943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30576.

The product of its digits is 1944, while the sum is 29.

The square root of 1129943 is about 1062.9877703906. The cubic root of 1129943 is about 104.1562923713.

The spelling of 1129943 in words is "one million, one hundred twenty-nine thousand, nine hundred forty-three".