1137943 has 4 divisors (see below), whose sum is σ = 1142248. Its totient is φ = 1133640.

The previous prime is 1137937. The next prime is 1137953. The reversal of 1137943 is 3497311.

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 1137943 - 2⁵ = 1137911 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 (1137953) 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, 1728 + ... + 2293.

It is an arithmetic number, because the mean of its divisors is an integer number (285562).

2^1137943 is an apocalyptic number.

1137943 is a deficient number, since it is larger than the sum of its proper divisors (4305).

1137943 is an equidigital number, since it uses as much as digits as its factorization.

1137943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4304.

The product of its digits is 2268, while the sum is 28.

The square root of 1137943 is about 1066.7441117719. The cubic root of 1137943 is about 104.4015234923.

It can be divided in two parts, 1137 and 943, that added together give a triangular number (2080 = T₆₄).

The spelling of 1137943 in words is "one million, one hundred thirty-seven thousand, nine hundred forty-three".