42142211 has 2 divisors, whose sum is σ = 42142212. Its totient is φ = 42142210.

The previous prime is 42142207. The next prime is 42142213. The reversal of 42142211 is 11224124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42142211 - 2² = 42142207 is a prime.

It is a Sophie Germain prime.

Together with 42142213, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42142211.

It is not a weakly prime, because it can be changed into another prime (42142213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21071105 + 21071106.

It is an arithmetic number, because the mean of its divisors is an integer number (21071106).

Almost surely, 2^42142211 is an apocalyptic number.

42142211 is a deficient number, since it is larger than the sum of its proper divisors (1).

42142211 is an equidigital number, since it uses as much as digits as its factorization.

42142211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 128, while the sum is 17.

The square root of 42142211 is about 6491.7032433715. The cubic root of 42142211 is about 347.9945473008.

Adding to 42142211 its reverse (11224124), we get a palindrome (53366335).

The spelling of 42142211 in words is "forty-two million, one hundred forty-two thousand, two hundred eleven".