1065011243 has 4 divisors (see below), whose sum is σ = 1066766400. Its totient is φ = 1063256088.

The previous prime is 1065011221. The next prime is 1065011273. The reversal of 1065011243 is 3421105601.

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 1065011243 - 2⁶ = 1065011179 is a prime.

It is a super-2 number, since 2×1065011243² = 2268497895432810098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1065011273) 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, 876668 + ... + 877881.

It is an arithmetic number, because the mean of its divisors is an integer number (266691600).

Almost surely, 2^1065011243 is an apocalyptic number.

1065011243 is a deficient number, since it is larger than the sum of its proper divisors (1755157).

1065011243 is an equidigital number, since it uses as much as digits as its factorization.

1065011243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755156.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1065011243 is about 32634.5100009177. The cubic root of 1065011243 is about 1021.2170666949.

Adding to 1065011243 its reverse (3421105601), we get a palindrome (4486116844).

The spelling of 1065011243 in words is "one billion, sixty-five million, eleven thousand, two hundred forty-three".