1243353 has 4 divisors (see below), whose sum is σ = 1657808. Its totient is φ = 828900.

The previous prime is 1243349. The next prime is 1243367. The reversal of 1243353 is 3533421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1243353 - 2² = 1243349 is a prime.

It is a D-number.

It is a Duffinian number.

1243353 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1243343) 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, 207223 + ... + 207228.

It is an arithmetic number, because the mean of its divisors is an integer number (414452).

2^1243353 is an apocalyptic number.

It is an amenable number.

1243353 is a deficient number, since it is larger than the sum of its proper divisors (414455).

1243353 is an equidigital number, since it uses as much as digits as its factorization.

1243353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414454.

The product of its digits is 1080, while the sum is 21.

The square root of 1243353 is about 1115.0573976258. The cubic root of 1243353 is about 107.5304546849.

Adding to 1243353 its reverse (3533421), we get a palindrome (4776774).

It can be divided in two parts, 1243 and 353, that added together give a triangular number (1596 = T₅₆).

The spelling of 1243353 in words is "one million, two hundred forty-three thousand, three hundred fifty-three".