1287012 has 12 divisors (see below), whose sum is σ = 3003056. Its totient is φ = 429000.

The previous prime is 1287007. The next prime is 1287047. The reversal of 1287012 is 2107821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1287012.

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, 53614 + ... + 53637.

2^1287012 is an apocalyptic number.

1287012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1287012 is an abundant number, since it is smaller than the sum of its proper divisors (1716044).

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

1287012 is a wasteful number, since it uses less digits than its factorization.

1287012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107258 (or 107256 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1287012 is about 1134.4655129179. The cubic root of 1287012 is about 108.7746093071.

It can be divided in two parts, 128 and 7012, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 1287012 in words is "one million, two hundred eighty-seven thousand, twelve".