1243243 has 4 divisors (see below), whose sum is σ = 1273608. Its totient is φ = 1212880.

The previous prime is 1243211. The next prime is 1243271. The reversal of 1243243 is 3423421.

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 1243243 - 2⁵ = 1243211 is a prime.

It is a Duffinian number.

1243243 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1243243.

It is not an unprimeable number, because it can be changed into a prime (1243273) 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, 15121 + ... + 15202.

It is an arithmetic number, because the mean of its divisors is an integer number (318402).

2^1243243 is an apocalyptic number.

1243243 is a deficient number, since it is larger than the sum of its proper divisors (30365).

1243243 is an equidigital number, since it uses as much as digits as its factorization.

1243243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30364.

The product of its digits is 576, while the sum is 19.

The square root of 1243243 is about 1115.0080717197. The cubic root of 1243243 is about 107.5272835021.

Adding to 1243243 its reverse (3423421), we get a palindrome (4666664).

The spelling of 1243243 in words is "one million, two hundred forty-three thousand, two hundred forty-three".