1140043 has 4 divisors (see below), whose sum is σ = 1143288. Its totient is φ = 1136800.

The previous prime is 1139993. The next prime is 1140091. The reversal of 1140043 is 3400411.

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 1140043 - 2⁹ = 1139531 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (1140143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1021 + ... + 1822.

It is an arithmetic number, because the mean of its divisors is an integer number (285822).

2^1140043 is an apocalyptic number.

1140043 is a deficient number, since it is larger than the sum of its proper divisors (3245).

1140043 is an equidigital number, since it uses as much as digits as its factorization.

1140043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3244.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1140043 is about 1067.7279616082. The cubic root of 1140043 is about 104.4657061069.

Adding to 1140043 its reverse (3400411), we get a palindrome (4540454).

The spelling of 1140043 in words is "one million, one hundred forty thousand, forty-three".