1287094 has 4 divisors (see below), whose sum is σ = 1930644. Its totient is φ = 643546.

The previous prime is 1287071. The next prime is 1287101. The reversal of 1287094 is 4907821.

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

It is a super-2 number, since 2×1287094² = 3313221929672, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321772 + ... + 321775.

It is an arithmetic number, because the mean of its divisors is an integer number (482661).

2^1287094 is an apocalyptic number.

1287094 is a deficient number, since it is larger than the sum of its proper divisors (643550).

1287094 is an equidigital number, since it uses as much as digits as its factorization.

1287094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643549.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1287094 is about 1134.5016527092. The cubic root of 1287094 is about 108.7769193940.

The spelling of 1287094 in words is "one million, two hundred eighty-seven thousand, ninety-four".