42042211 has 2 divisors, whose sum is σ = 42042212. Its totient is φ = 42042210.

The previous prime is 42042191. The next prime is 42042227. The reversal of 42042211 is 11224024.

It is an a-pointer prime, because the next prime (42042227) can be obtained adding 42042211 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42042211 - 2¹⁷ = 41911139 is a prime.

It is not a weakly prime, because it can be changed into another prime (42042271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21021105 + 21021106.

It is an arithmetic number, because the mean of its divisors is an integer number (21021106).

Almost surely, 2^42042211 is an apocalyptic number.

42042211 is a deficient number, since it is larger than the sum of its proper divisors (1).

42042211 is an equidigital number, since it uses as much as digits as its factorization.

42042211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 42042211 is about 6483.9965299189. The cubic root of 42042211 is about 347.7190751502.

Adding to 42042211 its reverse (11224024), we get a palindrome (53266235).

The spelling of 42042211 in words is "forty-two million, forty-two thousand, two hundred eleven".