1284844242 has 16 divisors (see below), whose sum is σ = 2803296672. Its totient is φ = 389346720.

The previous prime is 1284844237. The next prime is 1284844271. The reversal of 1284844242 is 2424484821.

It is a self number, because there is not a number n which added to its sum of digits gives 1284844242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9733603 + ... + 9733734.

It is an arithmetic number, because the mean of its divisors is an integer number (175206042).

Almost surely, 2^1284844242 is an apocalyptic number.

1284844242 is an abundant number, since it is smaller than the sum of its proper divisors (1518452430).

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

1284844242 is a wasteful number, since it uses less digits than its factorization.

1284844242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19467353.

The product of its digits is 131072, while the sum is 39.

The square root of 1284844242 is about 35844.7240469222. The cubic root of 1284844242 is about 1087.1350406479.

The spelling of 1284844242 in words is "one billion, two hundred eighty-four million, eight hundred forty-four thousand, two hundred forty-two".