1287415 has 8 divisors (see below), whose sum is σ = 1586880. Its totient is φ = 1001952.

The previous prime is 1287401. The next prime is 1287431. The reversal of 1287415 is 5147821.

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

It is a cyclic number.

It is not a de Polignac number, because 1287415 - 2¹⁵ = 1254647 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3295 + ... + 3664.

It is an arithmetic number, because the mean of its divisors is an integer number (198360).

2^1287415 is an apocalyptic number.

1287415 is a deficient number, since it is larger than the sum of its proper divisors (299465).

1287415 is an equidigital number, since it uses as much as digits as its factorization.

1287415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7001.

The product of its digits is 2240, while the sum is 28.

The square root of 1287415 is about 1134.6431156976. The cubic root of 1287415 is about 108.7859615952.

The spelling of 1287415 in words is "one million, two hundred eighty-seven thousand, four hundred fifteen".