1134821 has 2 divisors, whose sum is σ = 1134822. Its totient is φ = 1134820.

The previous prime is 1134811. The next prime is 1134841. The reversal of 1134821 is 1284311.

It is an a-pointer prime, because the next prime (1134841) can be obtained adding 1134821 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 664225 + 470596 = 815^2 + 686^2 .

It is a cyclic number.

It is not a de Polignac number, because 1134821 - 2¹⁴ = 1118437 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1134793 and 1134802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1134811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567410 + 567411.

It is an arithmetic number, because the mean of its divisors is an integer number (567411).

2^1134821 is an apocalyptic number.

It is an amenable number.

1134821 is a deficient number, since it is larger than the sum of its proper divisors (1).

1134821 is an equidigital number, since it uses as much as digits as its factorization.

1134821 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 1134821 is about 1065.2797754581. The cubic root of 1134821 is about 104.3059592182.

The spelling of 1134821 in words is "one million, one hundred thirty-four thousand, eight hundred twenty-one".