1242144242 has 8 divisors (see below), whose sum is σ = 1913573676. Its totient is φ = 604286352.

The previous prime is 1242144223. The next prime is 1242144283. The reversal of 1242144242 is 2424412421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 827655361 + 414488881 = 28769^2 + 20359^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8392793 + ... + 8392940.

Almost surely, 2^1242144242 is an apocalyptic number.

1242144242 is a deficient number, since it is larger than the sum of its proper divisors (671429434).

1242144242 is a wasteful number, since it uses less digits than its factorization.

1242144242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16785772.

The product of its digits is 4096, while the sum is 26.

The square root of 1242144242 is about 35244.0667630738. The cubic root of 1242144242 is about 1074.9559720926.

Adding to 1242144242 its reverse (2424412421), we get a palindrome (3666556663).

The spelling of 1242144242 in words is "one billion, two hundred forty-two million, one hundred forty-four thousand, two hundred forty-two".