1284842 has 8 divisors (see below), whose sum is σ = 2075556. Its totient is φ = 592992.

The previous prime is 1284841. The next prime is 1284847. The reversal of 1284842 is 2484821.

It can be written as a sum of positive squares in 2 ways, for example, as 1274641 + 10201 = 1129^2 + 101^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1284841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24683 + ... + 24734.

2^1284842 is an apocalyptic number.

1284842 is a deficient number, since it is larger than the sum of its proper divisors (790714).

1284842 is a wasteful number, since it uses less digits than its factorization.

1284842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49432.

The product of its digits is 4096, while the sum is 29.

The square root of 1284842 is about 1133.5087119206. The cubic root of 1284842 is about 108.7134408312.

The spelling of 1284842 in words is "one million, two hundred eighty-four thousand, eight hundred forty-two".