1123243 has 6 divisors (see below), whose sum is σ = 1234772. Its totient is φ = 1021020.

The previous prime is 1123231. The next prime is 1123247. The reversal of 1123243 is 3423211.

It is a happy number.

It is not a de Polignac number, because 1123243 - 2⁵ = 1123211 is a prime.

1123243 is a lucky number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1123247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4521 + ... + 4762.

2^1123243 is an apocalyptic number.

1123243 is a deficient number, since it is larger than the sum of its proper divisors (111529).

1123243 is an equidigital number, since it uses as much as digits as its factorization.

1123243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9305 (or 9294 counting only the distinct ones).

The product of its digits is 144, while the sum is 16.

The square root of 1123243 is about 1059.8315903954. The cubic root of 1123243 is about 103.9500191297.

Adding to 1123243 its reverse (3423211), we get a palindrome (4546454).

Subtracting 1123243 from its reverse (3423211), we obtain a cube (2299968 = 132³).

The spelling of 1123243 in words is "one million, one hundred twenty-three thousand, two hundred forty-three".