42849041 has 2 divisors, whose sum is σ = 42849042. Its totient is φ = 42849040.

The previous prime is 42849031. The next prime is 42849043. The reversal of 42849041 is 14094824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37466641 + 5382400 = 6121^2 + 2320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42849041 is a prime.

It is a Sophie Germain prime.

Together with 42849043, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42848989 and 42849007.

It is not a weakly prime, because it can be changed into another prime (42849043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21424520 + 21424521.

It is an arithmetic number, because the mean of its divisors is an integer number (21424521).

Almost surely, 2^42849041 is an apocalyptic number.

It is an amenable number.

42849041 is a deficient number, since it is larger than the sum of its proper divisors (1).

42849041 is an equidigital number, since it uses as much as digits as its factorization.

42849041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 42849041 is about 6545.9178882720. The cubic root of 42849041 is about 349.9293490047.

The spelling of 42849041 in words is "forty-two million, eight hundred forty-nine thousand, forty-one".