211042427 has 2 divisors, whose sum is σ = 211042428. Its totient is φ = 211042426.

The previous prime is 211042397. The next prime is 211042453. The reversal of 211042427 is 724240112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211042427 - 2¹⁶ = 210976891 is a prime.

It is not a weakly prime, because it can be changed into another prime (211041427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105521213 + 105521214.

It is an arithmetic number, because the mean of its divisors is an integer number (105521214).

Almost surely, 2^211042427 is an apocalyptic number.

211042427 is a deficient number, since it is larger than the sum of its proper divisors (1).

211042427 is an equidigital number, since it uses as much as digits as its factorization.

211042427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 211042427 is about 14527.2993704955. The cubic root of 211042427 is about 595.3740810778.

Adding to 211042427 its reverse (724240112), we get a palindrome (935282539).

The spelling of 211042427 in words is "two hundred eleven million, forty-two thousand, four hundred twenty-seven".