42445211 has 2 divisors, whose sum is σ = 42445212. Its totient is φ = 42445210.

The previous prime is 42445187. The next prime is 42445217. The reversal of 42445211 is 11254424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42445211 - 2¹⁸ = 42183067 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42445217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21222605 + 21222606.

It is an arithmetic number, because the mean of its divisors is an integer number (21222606).

Almost surely, 2^42445211 is an apocalyptic number.

42445211 is a deficient number, since it is larger than the sum of its proper divisors (1).

42445211 is an equidigital number, since it uses as much as digits as its factorization.

42445211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1280, while the sum is 23.

The square root of 42445211 is about 6514.9989255563. The cubic root of 42445211 is about 348.8265764538.

Adding to 42445211 its reverse (11254424), we get a palindrome (53699635).

The spelling of 42445211 in words is "forty-two million, four hundred forty-five thousand, two hundred eleven".