1242144441 has 12 divisors (see below), whose sum is σ = 1794557232. Its totient is φ = 827935416.

The previous prime is 1242144439. The next prime is 1242144467. The reversal of 1242144441 is 1444412421.

It is a happy number.

1242144441 is a `hidden beast` number, since 1 + 2 + 4 + 214 + 4 + 441 = 666.

It is not a de Polignac number, because 1242144441 - 2¹ = 1242144439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242144401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52590 + ... + 72456.

It is an arithmetic number, because the mean of its divisors is an integer number (149546436).

Almost surely, 2^1242144441 is an apocalyptic number.

It is an amenable number.

1242144441 is a deficient number, since it is larger than the sum of its proper divisors (552412791).

1242144441 is a wasteful number, since it uses less digits than its factorization.

1242144441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26820 (or 26817 counting only the distinct ones).

The product of its digits is 4096, while the sum is 27.

The square root of 1242144441 is about 35244.0695862439. The cubic root of 1242144441 is about 1074.9560294977.

Adding to 1242144441 its reverse (1444412421), we get a palindrome (2686556862).

The spelling of 1242144441 in words is "one billion, two hundred forty-two million, one hundred forty-four thousand, four hundred forty-one".