1287934 has 8 divisors (see below), whose sum is σ = 2033640. Its totient is φ = 610056.

The previous prime is 1287917. The next prime is 1287947. The reversal of 1287934 is 4397821.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1287934.

It is a congruent number.

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, 16909 + ... + 16984.

It is an arithmetic number, because the mean of its divisors is an integer number (254205).

2^1287934 is an apocalyptic number.

1287934 is a deficient number, since it is larger than the sum of its proper divisors (745706).

1287934 is a wasteful number, since it uses less digits than its factorization.

1287934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33914.

The product of its digits is 12096, while the sum is 34.

The square root of 1287934 is about 1134.8717989271. The cubic root of 1287934 is about 108.8005780498.

The spelling of 1287934 in words is "one million, two hundred eighty-seven thousand, nine hundred thirty-four".