1906241 has 2 divisors, whose sum is σ = 1906242. Its totient is φ = 1906240.

The previous prime is 1906237. The next prime is 1906243. The reversal of 1906241 is 1426091.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1635841 + 270400 = 1279^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 1906241 - 2² = 1906237 is a prime.

Together with 1906243, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1906243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 953120 + 953121.

It is an arithmetic number, because the mean of its divisors is an integer number (953121).

2^1906241 is an apocalyptic number.

It is an amenable number.

1906241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1906241 is an equidigital number, since it uses as much as digits as its factorization.

1906241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1906241 is about 1380.6668678577. Note that the first 3 decimals coincide. The cubic root of 1906241 is about 123.9916964610.

The spelling of 1906241 in words is "one million, nine hundred six thousand, two hundred forty-one".