20842441 has 2 divisors, whose sum is σ = 20842442. Its totient is φ = 20842440.

The previous prime is 20842429. The next prime is 20842453. The reversal of 20842441 is 14424802.

It is a balanced prime because it is at equal distance from previous prime (20842429) and next prime (20842453).

It can be written as a sum of positive squares in only one way, i.e., 20793600 + 48841 = 4560^2 + 221^2 .

It is a cyclic number.

It is not a de Polignac number, because 20842441 - 2¹³ = 20834249 is a prime.

It is not a weakly prime, because it can be changed into another prime (20842421) 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, 10421220 + 10421221.

It is an arithmetic number, because the mean of its divisors is an integer number (10421221).

Almost surely, 2^20842441 is an apocalyptic number.

It is an amenable number.

20842441 is a deficient number, since it is larger than the sum of its proper divisors (1).

20842441 is an equidigital number, since it uses as much as digits as its factorization.

20842441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 20842441 is about 4565.3522317561. The cubic root of 20842441 is about 275.2006953699.

The spelling of 20842441 in words is "twenty million, eight hundred forty-two thousand, four hundred forty-one".