1243242234 has 48 divisors (see below), whose sum is σ = 2941795584. Its totient is φ = 377143200.

The previous prime is 1243242233. The next prime is 1243242241. The reversal of 1243242234 is 4322423421.

1243242234 is a `hidden beast` number, since 1 + 2 + 432 + 4 + 223 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1243242198 and 1243242207.

It is not an unprimeable number, because it can be changed into a prime (1243242233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20802 + ... + 54029.

It is an arithmetic number, because the mean of its divisors is an integer number (61287408).

Almost surely, 2^1243242234 is an apocalyptic number.

1243242234 is an abundant number, since it is smaller than the sum of its proper divisors (1698553350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243242234 is a wasteful number, since it uses less digits than its factorization.

1243242234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74923 (or 74920 counting only the distinct ones).

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

The square root of 1243242234 is about 35259.6402987892. The cubic root of 1243242234 is about 1075.2726141850.

Adding to 1243242234 its reverse (4322423421), we get a palindrome (5565665655).

The spelling of 1243242234 in words is "one billion, two hundred forty-three million, two hundred forty-two thousand, two hundred thirty-four".