1143481 has 2 divisors, whose sum is σ = 1143482. Its totient is φ = 1143480.

The previous prime is 1143473. The next prime is 1143487. The reversal of 1143481 is 1843411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1123600 + 19881 = 1060^2 + 141^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143481 - 2³ = 1143473 is a prime.

It is a super-2 number, since 2×1143481² = 2615097594722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1143487) 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 as a sum of consecutive naturals, namely, 571740 + 571741.

It is an arithmetic number, because the mean of its divisors is an integer number (571741).

2^1143481 is an apocalyptic number.

It is an amenable number.

1143481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143481 is an equidigital number, since it uses as much as digits as its factorization.

1143481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 22.

The square root of 1143481 is about 1069.3367103022. The cubic root of 1143481 is about 104.5706122878.

Adding to 1143481 its reverse (1843411), we get a palindrome (2986892).

The spelling of 1143481 in words is "one million, one hundred forty-three thousand, four hundred eighty-one".