1287207 has 12 divisors (see below), whose sum is σ = 1881360. Its totient is φ = 847968.

The previous prime is 1287199. The next prime is 1287217. The reversal of 1287207 is 7027821.

It is not a de Polignac number, because 1287207 - 2³ = 1287199 is a prime.

1287207 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3 + ... + 1604.

It is an arithmetic number, because the mean of its divisors is an integer number (156780).

2^1287207 is an apocalyptic number.

1287207 is a deficient number, since it is larger than the sum of its proper divisors (594153).

1287207 is a wasteful number, since it uses less digits than its factorization.

1287207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702 (or 1699 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 1287207 is about 1134.5514532184. The cubic root of 1287207 is about 108.7801026456.

The spelling of 1287207 in words is "one million, two hundred eighty-seven thousand, two hundred seven".