40820141 has 2 divisors, whose sum is σ = 40820142. Its totient is φ = 40820140.

The previous prime is 40820119. The next prime is 40820159. The reversal of 40820141 is 14102804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40513225 + 306916 = 6365^2 + 554^2 .

It is a cyclic number.

It is not a de Polignac number, because 40820141 - 2¹⁰ = 40819117 is a prime.

It is a super-2 number, since 2×40820141² = 3332567822519762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40820161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20410070 + 20410071.

It is an arithmetic number, because the mean of its divisors is an integer number (20410071).

Almost surely, 2^40820141 is an apocalyptic number.

It is an amenable number.

40820141 is a deficient number, since it is larger than the sum of its proper divisors (1).

40820141 is an equidigital number, since it uses as much as digits as its factorization.

40820141 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 40820141 is about 6389.0641724747. The cubic root of 40820141 is about 344.3167630548.

Adding to 40820141 its reverse (14102804), we get a palindrome (54922945).

The spelling of 40820141 in words is "forty million, eight hundred twenty thousand, one hundred forty-one".