1242323243 has 16 divisors (see below), whose sum is σ = 1434856896. Its totient is φ = 1053588480.

The previous prime is 1242323221. The next prime is 1242323267. The reversal of 1242323243 is 3423232421.

It is not a de Polignac number, because 1242323243 - 2¹⁴ = 1242306859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242323213) 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, 648455 + ... + 650367.

It is an arithmetic number, because the mean of its divisors is an integer number (89678556).

Almost surely, 2^1242323243 is an apocalyptic number.

1242323243 is a deficient number, since it is larger than the sum of its proper divisors (192533653).

1242323243 is a wasteful number, since it uses less digits than its factorization.

1242323243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854.

The product of its digits is 6912, while the sum is 26.

The square root of 1242323243 is about 35246.6061203061. The cubic root of 1242323243 is about 1075.0076056430.

Adding to 1242323243 its reverse (3423232421), we get a palindrome (4665555664).

The spelling of 1242323243 in words is "one billion, two hundred forty-two million, three hundred twenty-three thousand, two hundred forty-three".