1145043 has 8 divisors (see below), whose sum is σ = 1696400. Its totient is φ = 763344.

The previous prime is 1145021. The next prime is 1145057. The reversal of 1145043 is 3405411.

It is a happy number.

It is not a de Polignac number, because 1145043 - 2¹⁰ = 1144019 is a prime.

It is a super-2 number, since 2×1145043² = 2622246943698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145003) 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 7 ways as a sum of consecutive naturals, for example, 21178 + ... + 21231.

It is an arithmetic number, because the mean of its divisors is an integer number (212050).

2^1145043 is an apocalyptic number.

1145043 is a deficient number, since it is larger than the sum of its proper divisors (551357).

1145043 is an equidigital number, since it uses as much as digits as its factorization.

1145043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42418 (or 42412 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1145043 is about 1070.0668203435. The cubic root of 1145043 is about 104.6182052601.

It can be divided in two parts, 11 and 45043, that added together give a palindrome (45054).

The spelling of 1145043 in words is "one million, one hundred forty-five thousand, forty-three".