42087211 has 2 divisors, whose sum is σ = 42087212. Its totient is φ = 42087210.

The previous prime is 42087203. The next prime is 42087251. The reversal of 42087211 is 11278024.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42087211 - 2³ = 42087203 is a prime.

It is not a weakly prime, because it can be changed into another prime (42087251) 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, 21043605 + 21043606.

It is an arithmetic number, because the mean of its divisors is an integer number (21043606).

Almost surely, 2^42087211 is an apocalyptic number.

42087211 is a deficient number, since it is larger than the sum of its proper divisors (1).

42087211 is an equidigital number, since it uses as much as digits as its factorization.

42087211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 42087211 is about 6487.4656839169. The cubic root of 42087211 is about 347.8430916136.

The spelling of 42087211 in words is "forty-two million, eighty-seven thousand, two hundred eleven".