1243123341 has 16 divisors (see below), whose sum is σ = 1675907328. Its totient is φ = 819590400.

The previous prime is 1243123339. The next prime is 1243123361. The reversal of 1243123341 is 1433213421.

It is a happy number.

It is not a de Polignac number, because 1243123341 - 2¹ = 1243123339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243123361) 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 15 ways as a sum of consecutive naturals, for example, 105801 + ... + 116961.

It is an arithmetic number, because the mean of its divisors is an integer number (104744208).

Almost surely, 2^1243123341 is an apocalyptic number.

It is an amenable number.

1243123341 is a deficient number, since it is larger than the sum of its proper divisors (432783987).

1243123341 is a wasteful number, since it uses less digits than its factorization.

1243123341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11572.

The product of its digits is 1728, while the sum is 24.

The square root of 1243123341 is about 35257.9542940313. The cubic root of 1243123341 is about 1075.2383364825.

Adding to 1243123341 its reverse (1433213421), we get a palindrome (2676336762).

The spelling of 1243123341 in words is "one billion, two hundred forty-three million, one hundred twenty-three thousand, three hundred forty-one".