405241211 has 2 divisors, whose sum is σ = 405241212. Its totient is φ = 405241210.

The previous prime is 405241201. The next prime is 405241219. The reversal of 405241211 is 112142504.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 405241211 - 2⁶ = 405241147 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (405241219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202620605 + 202620606.

It is an arithmetic number, because the mean of its divisors is an integer number (202620606).

Almost surely, 2^405241211 is an apocalyptic number.

405241211 is a deficient number, since it is larger than the sum of its proper divisors (1).

405241211 is an equidigital number, since it uses as much as digits as its factorization.

405241211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 405241211 is about 20130.6038409184. The cubic root of 405241211 is about 740.0104764770.

Adding to 405241211 its reverse (112142504), we get a palindrome (517383715).

The spelling of 405241211 in words is "four hundred five million, two hundred forty-one thousand, two hundred eleven".