20105741 has 2 divisors, whose sum is σ = 20105742. Its totient is φ = 20105740.

The previous prime is 20105731. The next prime is 20105753. The reversal of 20105741 is 14750102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10588516 + 9517225 = 3254^2 + 3085^2 .

It is a cyclic number.

It is not a de Polignac number, because 20105741 - 2⁶ = 20105677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20105711) 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, 10052870 + 10052871.

It is an arithmetic number, because the mean of its divisors is an integer number (10052871).

Almost surely, 2^20105741 is an apocalyptic number.

It is an amenable number.

20105741 is a deficient number, since it is larger than the sum of its proper divisors (1).

20105741 is an equidigital number, since it uses as much as digits as its factorization.

20105741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 20105741 is about 4483.9425732273. The cubic root of 20105741 is about 271.9192964509.

Adding to 20105741 its reverse (14750102), we get a palindrome (34855843).

The spelling of 20105741 in words is "twenty million, one hundred five thousand, seven hundred forty-one".