1284002 has 8 divisors (see below), whose sum is σ = 1932012. Its totient is φ = 640000.

The previous prime is 1283983. The next prime is 1284007. The reversal of 1284002 is 2004821.

It can be written as a sum of positive squares in 2 ways, for example, as 737881 + 546121 = 859^2 + 739^2 .

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

It is a super-2 number, since 2×1284002² = 3297322272008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1284007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2 + ... + 1602.

2^1284002 is an apocalyptic number.

1284002 is a deficient number, since it is larger than the sum of its proper divisors (648010).

1284002 is a wasteful number, since it uses less digits than its factorization.

1284002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1284002 is about 1133.1381204425. The cubic root of 1284002 is about 108.6897442215.

Adding to 1284002 its reverse (2004821), we get a palindrome (3288823).

The spelling of 1284002 in words is "one million, two hundred eighty-four thousand, two".