42111211 has 2 divisors, whose sum is σ = 42111212. Its totient is φ = 42111210.

The previous prime is 42111131. The next prime is 42111247. The reversal of 42111211 is 11211124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42111211 - 2¹¹ = 42109163 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42111191 and 42111200.

It is not a weakly prime, because it can be changed into another prime (42111281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21055605 + 21055606.

It is an arithmetic number, because the mean of its divisors is an integer number (21055606).

Almost surely, 2^42111211 is an apocalyptic number.

42111211 is a deficient number, since it is larger than the sum of its proper divisors (1).

42111211 is an equidigital number, since it uses as much as digits as its factorization.

42111211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16, while the sum is 13.

The square root of 42111211 is about 6489.3151410607. The cubic root of 42111211 is about 347.9091975847.

Adding to 42111211 its reverse (11211124), we get a palindrome (53322335).

The spelling of 42111211 in words is "forty-two million, one hundred eleven thousand, two hundred eleven".