1230787 has 4 divisors (see below), whose sum is σ = 1236136. Its totient is φ = 1225440.

The previous prime is 1230769. The next prime is 1230791. The reversal of 1230787 is 7870321.

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 1230787 - 2¹⁹ = 706499 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230727) 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, 2313 + ... + 2794.

It is an arithmetic number, because the mean of its divisors is an integer number (309034).

2^1230787 is an apocalyptic number.

1230787 is a deficient number, since it is larger than the sum of its proper divisors (5349).

1230787 is an equidigital number, since it uses as much as digits as its factorization.

1230787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5348.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 1230787 is about 1109.4084009056. The cubic root of 1230787 is about 107.1669737035.

The spelling of 1230787 in words is "one million, two hundred thirty thousand, seven hundred eighty-seven".