42799111 has 2 divisors, whose sum is σ = 42799112. Its totient is φ = 42799110.

The previous prime is 42799109. The next prime is 42799117. The reversal of 42799111 is 11199724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42799111 - 2¹ = 42799109 is a prime.

Together with 42799109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42799117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21399555 + 21399556.

It is an arithmetic number, because the mean of its divisors is an integer number (21399556).

Almost surely, 2^42799111 is an apocalyptic number.

42799111 is a deficient number, since it is larger than the sum of its proper divisors (1).

42799111 is an equidigital number, since it uses as much as digits as its factorization.

42799111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 34.

The square root of 42799111 is about 6542.1029493581. The cubic root of 42799111 is about 349.7933773640.

The spelling of 42799111 in words is "forty-two million, seven hundred ninety-nine thousand, one hundred eleven".