1287341 has 8 divisors (see below), whose sum is σ = 1442784. Its totient is φ = 1138320.

The previous prime is 1287329. The next prime is 1287343. The reversal of 1287341 is 1437821.

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 1287341 - 2¹⁸ = 1025197 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1287341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287343) 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 7 ways as a sum of consecutive naturals, for example, 1175 + ... + 1988.

It is an arithmetic number, because the mean of its divisors is an integer number (180348).

2^1287341 is an apocalyptic number.

1287341 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1287341 is a deficient number, since it is larger than the sum of its proper divisors (155443).

1287341 is a wasteful number, since it uses less digits than its factorization.

1287341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211.

The product of its digits is 1344, while the sum is 26.

The square root of 1287341 is about 1134.6105058565. The cubic root of 1287341 is about 108.7838772336.

The spelling of 1287341 in words is "one million, two hundred eighty-seven thousand, three hundred forty-one".