42228679 has 2 divisors, whose sum is σ = 42228680. Its totient is φ = 42228678.

The previous prime is 42228587. The next prime is 42228689. The reversal of 42228679 is 97682224.

42228679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42228679 - 2⁷ = 42228551 is a prime.

It is a super-2 number, since 2×42228679² = 3566522660170082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42228689) 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, 21114339 + 21114340.

It is an arithmetic number, because the mean of its divisors is an integer number (21114340).

Almost surely, 2^42228679 is an apocalyptic number.

42228679 is a deficient number, since it is larger than the sum of its proper divisors (1).

42228679 is an equidigital number, since it uses as much as digits as its factorization.

42228679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 40.

The square root of 42228679 is about 6498.3597161130. The cubic root of 42228679 is about 348.2323914580.

The spelling of 42228679 in words is "forty-two million, two hundred twenty-eight thousand, six hundred seventy-nine".