41842781 has 2 divisors, whose sum is σ = 41842782. Its totient is φ = 41842780.

The previous prime is 41842751. The next prime is 41842783. The reversal of 41842781 is 18724814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23609881 + 18232900 = 4859^2 + 4270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41842781 is a prime.

It is a super-2 number, since 2×41842781² = 3501636643627922, which contains 22 as substring.

Together with 41842783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41842783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20921390 + 20921391.

It is an arithmetic number, because the mean of its divisors is an integer number (20921391).

Almost surely, 2^41842781 is an apocalyptic number.

It is an amenable number.

41842781 is a deficient number, since it is larger than the sum of its proper divisors (1).

41842781 is an equidigital number, since it uses as much as digits as its factorization.

41842781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14336, while the sum is 35.

The square root of 41842781 is about 6468.5996166095. The cubic root of 41842781 is about 347.1683940460.

The spelling of 41842781 in words is "forty-one million, eight hundred forty-two thousand, seven hundred eighty-one".