42667111 has 2 divisors, whose sum is σ = 42667112. Its totient is φ = 42667110.

The previous prime is 42667081. The next prime is 42667133. The reversal of 42667111 is 11176624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42667111 - 2⁷ = 42666983 is a prime.

It is a super-2 number, since 2×42667111² = 3640964722172642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42667111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42667151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21333555 + 21333556.

It is an arithmetic number, because the mean of its divisors is an integer number (21333556).

Almost surely, 2^42667111 is an apocalyptic number.

42667111 is a deficient number, since it is larger than the sum of its proper divisors (1).

42667111 is an equidigital number, since it uses as much as digits as its factorization.

42667111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 42667111 is about 6532.0066595190. The cubic root of 42667111 is about 349.4333988932.

It can be divided in two parts, 42667 and 111, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 42667111 in words is "forty-two million, six hundred sixty-seven thousand, one hundred eleven".