1011243 has 4 divisors (see below), whose sum is σ = 1348328. Its totient is φ = 674160.

The previous prime is 1011239. The next prime is 1011271. The reversal of 1011243 is 3421101.

It is a happy number.

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

It is not a de Polignac number, because 1011243 - 2² = 1011239 is a prime.

It is a super-2 number, since 2×1011243² = 2045224810098, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

1011243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1011233) 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, 168538 + ... + 168543.

It is an arithmetic number, because the mean of its divisors is an integer number (337082).

2^1011243 is an apocalyptic number.

1011243 is a deficient number, since it is larger than the sum of its proper divisors (337085).

1011243 is an equidigital number, since it uses as much as digits as its factorization.

1011243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337084.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1011243 is about 1005.6057875728. The cubic root of 1011243 is about 100.3733708736.

Adding to 1011243 its reverse (3421101), we get a palindrome (4432344).

The spelling of 1011243 in words is "one million, eleven thousand, two hundred forty-three".