42111679 has 2 divisors, whose sum is σ = 42111680. Its totient is φ = 42111678.

The previous prime is 42111673. The next prime is 42111691. The reversal of 42111679 is 97611124.

42111679 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 a de Polignac number, because none of the positive numbers 2^k-42111679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42111679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42111673) 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, 21055839 + 21055840.

It is an arithmetic number, because the mean of its divisors is an integer number (21055840).

Almost surely, 2^42111679 is an apocalyptic number.

42111679 is a deficient number, since it is larger than the sum of its proper divisors (1).

42111679 is an equidigital number, since it uses as much as digits as its factorization.

42111679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 31.

The square root of 42111679 is about 6489.3512002357. The cubic root of 42111679 is about 347.9104864014.

It can be divided in two parts, 421 and 11679, that added together give a square (12100 = 110²).

The spelling of 42111679 in words is "forty-two million, one hundred eleven thousand, six hundred seventy-nine".