1287002 has 8 divisors (see below), whose sum is σ = 2044116. Its totient is φ = 605632.

The previous prime is 1286983. The next prime is 1287007. The reversal of 1287002 is 2007821.

It can be written as a sum of positive squares in 2 ways, for example, as 1229881 + 57121 = 1109^2 + 239^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1287007) 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, 18893 + ... + 18960.

2^1287002 is an apocalyptic number.

1287002 is a deficient number, since it is larger than the sum of its proper divisors (757114).

1287002 is a wasteful number, since it uses less digits than its factorization.

1287002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37872.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 1287002 is about 1134.4611055475. The cubic root of 1287002 is about 108.7743275825.

The spelling of 1287002 in words is "one million, two hundred eighty-seven thousand, two".