1242334443 has 16 divisors (see below), whose sum is σ = 1975389696. Its totient is φ = 679039680.

The previous prime is 1242334427. The next prime is 1242334477. The reversal of 1242334443 is 3444332421.

It is a happy number.

It is not a de Polignac number, because 1242334443 - 2⁴ = 1242334427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1242334443.

It is not an unprimeable number, because it can be changed into a prime (1242334493) 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, 1285578 + ... + 1286543.

It is an arithmetic number, because the mean of its divisors is an integer number (123461856).

Almost surely, 2^1242334443 is an apocalyptic number.

1242334443 is a deficient number, since it is larger than the sum of its proper divisors (733055253).

1242334443 is a wasteful number, since it uses less digits than its factorization.

1242334443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2572154.

The product of its digits is 27648, while the sum is 30.

The square root of 1242334443 is about 35246.7650004933. The cubic root of 1242334443 is about 1075.0108361626.

Adding to 1242334443 its reverse (3444332421), we get a palindrome (4686666864).

The spelling of 1242334443 in words is "one billion, two hundred forty-two million, three hundred thirty-four thousand, four hundred forty-three".