1242343223 has 4 divisors (see below), whose sum is σ = 1355283528. Its totient is φ = 1129402920.

The previous prime is 1242343217. The next prime is 1242343231. The reversal of 1242343223 is 3223432421.

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 1242343223 - 2⁶ = 1242343159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242343192 and 1242343201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242343213) 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, 56470136 + ... + 56470157.

It is an arithmetic number, because the mean of its divisors is an integer number (338820882).

Almost surely, 2^1242343223 is an apocalyptic number.

1242343223 is a deficient number, since it is larger than the sum of its proper divisors (112940305).

1242343223 is a wasteful number, since it uses less digits than its factorization.

1242343223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112940304.

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

The square root of 1242343223 is about 35246.8895507107. The cubic root of 1242343223 is about 1075.0133686457.

Adding to 1242343223 its reverse (3223432421), we get a palindrome (4465775644).

The spelling of 1242343223 in words is "one billion, two hundred forty-two million, three hundred forty-three thousand, two hundred twenty-three".