1284131 has 2 divisors, whose sum is σ = 1284132. Its totient is φ = 1284130.

The previous prime is 1284083. The next prime is 1284169. The reversal of 1284131 is 1314821.

It is a strong prime.

It is an emirp because it is prime and its reverse (1314821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1284131 is a prime.

It is a super-2 number, since 2×1284131² = 3297984850322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1284631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642065 + 642066.

It is an arithmetic number, because the mean of its divisors is an integer number (642066).

2^1284131 is an apocalyptic number.

1284131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284131 is an equidigital number, since it uses as much as digits as its factorization.

1284131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 20.

The square root of 1284131 is about 1133.1950405822. The cubic root of 1284131 is about 108.6933840153.

Adding to 1284131 its reverse (1314821), we get a palindrome (2598952).

The spelling of 1284131 in words is "one million, two hundred eighty-four thousand, one hundred thirty-one".