1321141 has 2 divisors, whose sum is σ = 1321142. Its totient is φ = 1321140.

The previous prime is 1321139. The next prime is 1321157. The reversal of 1321141 is 1411231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 758641 + 562500 = 871^2 + 750^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321141 - 2¹ = 1321139 is a prime.

Together with 1321139, it forms a pair of twin primes.

It is equal to p₁₀₁₅₀₆ and since 1321141 and 101506 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660570 + 660571.

It is an arithmetic number, because the mean of its divisors is an integer number (660571).

2^1321141 is an apocalyptic number.

It is an amenable number.

1321141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321141 is an equidigital number, since it uses as much as digits as its factorization.

1321141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24, while the sum is 13.

The square root of 1321141 is about 1149.4089785625. The cubic root of 1321141 is about 109.7277288364.

Adding to 1321141 its reverse (1411231), we get a palindrome (2732372).

The spelling of 1321141 in words is "one million, three hundred twenty-one thousand, one hundred forty-one".