42706219 has 2 divisors, whose sum is σ = 42706220. Its totient is φ = 42706218.

The previous prime is 42706211. The next prime is 42706249. The reversal of 42706219 is 91260724.

42706219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42706219 - 2³ = 42706211 is a prime.

It is a super-2 number, since 2×42706219² = 3647642282551922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42706211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21353109 + 21353110.

It is an arithmetic number, because the mean of its divisors is an integer number (21353110).

Almost surely, 2^42706219 is an apocalyptic number.

42706219 is a deficient number, since it is larger than the sum of its proper divisors (1).

42706219 is an equidigital number, since it uses as much as digits as its factorization.

42706219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 42706219 is about 6534.9995409334. Note that the first 3 decimals coincide. The cubic root of 42706219 is about 349.5401280024.

The spelling of 42706219 in words is "forty-two million, seven hundred six thousand, two hundred nineteen".