12342402243 has 64 divisors (see below), whose sum is σ = 19175578240. Its totient is φ = 7838208000.

The previous prime is 12342402211. The next prime is 12342402251. The reversal of 12342402243 is 34220424321.

12342402243 is a `hidden beast` number, since 1 + 234 + 2 + 402 + 24 + 3 = 666.

It is not a de Polignac number, because 12342402243 - 2⁵ = 12342402211 is a prime.

It is a super-2 number, since 2×12342402243² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12342402263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20536143 + ... + 20536743.

It is an arithmetic number, because the mean of its divisors is an integer number (299618410).

Almost surely, 2^12342402243 is an apocalyptic number.

12342402243 is a deficient number, since it is larger than the sum of its proper divisors (6833175997).

12342402243 is a wasteful number, since it uses less digits than its factorization.

12342402243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045 (or 1039 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 12342402243 its reverse (34220424321), we get a palindrome (46562826564).

The spelling of 12342402243 in words is "twelve billion, three hundred forty-two million, four hundred two thousand, two hundred forty-three".