1287193 has 8 divisors (see below), whose sum is σ = 1392320. Its totient is φ = 1185840.

The previous prime is 1287179. The next prime is 1287197. The reversal of 1287193 is 3917821.

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 1287193 - 2¹³ = 1279001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1287197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213 + ... + 1618.

It is an arithmetic number, because the mean of its divisors is an integer number (174040).

2^1287193 is an apocalyptic number.

It is an amenable number.

1287193 is a deficient number, since it is larger than the sum of its proper divisors (105127).

1287193 is a wasteful number, since it uses less digits than its factorization.

1287193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887.

The product of its digits is 3024, while the sum is 31.

The square root of 1287193 is about 1134.5452833625. The cubic root of 1287193 is about 108.7797082706.

The spelling of 1287193 in words is "one million, two hundred eighty-seven thousand, one hundred ninety-three".