1021441 has 2 divisors, whose sum is σ = 1021442. Its totient is φ = 1021440.

The previous prime is 1021429. The next prime is 1021457. The reversal of 1021441 is 1441201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 531441 + 490000 = 729^2 + 700^2 .

It is an emirp because it is prime and its reverse (1441201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1021441 - 2¹³ = 1013249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1021541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510720 + 510721.

It is an arithmetic number, because the mean of its divisors is an integer number (510721).

2^1021441 is an apocalyptic number.

It is an amenable number.

1021441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021441 is an equidigital number, since it uses as much as digits as its factorization.

1021441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1021441 is about 1010.6636433552. The cubic root of 1021441 is about 100.7096520272.

Adding to 1021441 its reverse (1441201), we get a palindrome (2462642).

The spelling of 1021441 in words is "one million, twenty-one thousand, four hundred forty-one".