1294021 has 2 divisors, whose sum is σ = 1294022. Its totient is φ = 1294020.

The previous prime is 1294019. The next prime is 1294031. The reversal of 1294021 is 1204921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 950625 + 343396 = 975^2 + 586^2 .

It is a cyclic number.

It is not a de Polignac number, because 1294021 - 2¹ = 1294019 is a prime.

Together with 1294019, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1294021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1294031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647010 + 647011.

It is an arithmetic number, because the mean of its divisors is an integer number (647011).

2^1294021 is an apocalyptic number.

It is an amenable number.

1294021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1294021 is an equidigital number, since it uses as much as digits as its factorization.

1294021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1294021 is about 1137.5504384422. The cubic root of 1294021 is about 108.9717122116.

Adding to 1294021 its reverse (1204921), we get a palindrome (2498942).

The spelling of 1294021 in words is "one million, two hundred ninety-four thousand, twenty-one".