42216407 has 2 divisors, whose sum is σ = 42216408. Its totient is φ = 42216406.

The previous prime is 42216403. The next prime is 42216439. The reversal of 42216407 is 70461224.

42216407 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 42216407 - 2² = 42216403 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42216401) 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, 21108203 + 21108204.

It is an arithmetic number, because the mean of its divisors is an integer number (21108204).

Almost surely, 2^42216407 is an apocalyptic number.

42216407 is a deficient number, since it is larger than the sum of its proper divisors (1).

42216407 is an equidigital number, since it uses as much as digits as its factorization.

42216407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 42216407 is about 6497.4154092223. The cubic root of 42216407 is about 348.1986551281.

The spelling of 42216407 in words is "forty-two million, two hundred sixteen thousand, four hundred seven".