1298087 has 4 divisors (see below), whose sum is σ = 1483536. Its totient is φ = 1112640.

The previous prime is 1298057. The next prime is 1298111. The reversal of 1298087 is 7808921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1298087 - 2¹⁰ = 1297063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298027) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 92714 + ... + 92727.

It is an arithmetic number, because the mean of its divisors is an integer number (370884).

2^1298087 is an apocalyptic number.

1298087 is a deficient number, since it is larger than the sum of its proper divisors (185449).

1298087 is an equidigital number, since it uses as much as digits as its factorization.

1298087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185448.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 1298087 is about 1139.3362102558. The cubic root of 1298087 is about 109.0857278053.

The spelling of 1298087 in words is "one million, two hundred ninety-eight thousand, eighty-seven".