1420841 has 2 divisors, whose sum is σ = 1420842. Its totient is φ = 1420840.

The previous prime is 1420831. The next prime is 1420847. The reversal of 1420841 is 1480241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 958441 + 462400 = 979^2 + 680^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420841 - 2⁶ = 1420777 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1420847) 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, 710420 + 710421.

It is an arithmetic number, because the mean of its divisors is an integer number (710421).

2^1420841 is an apocalyptic number.

It is an amenable number.

1420841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420841 is an equidigital number, since it uses as much as digits as its factorization.

1420841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1420841 is about 1191.9903523100. The cubic root of 1420841 is about 112.4212716672.

The spelling of 1420841 in words is "one million, four hundred twenty thousand, eight hundred forty-one".