42940111 has 2 divisors, whose sum is σ = 42940112. Its totient is φ = 42940110.

The previous prime is 42940109. The next prime is 42940153. The reversal of 42940111 is 11104924.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42940111 - 2¹ = 42940109 is a prime.

Together with 42940109, 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 (42940511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21470055 + 21470056.

It is an arithmetic number, because the mean of its divisors is an integer number (21470056).

Almost surely, 2^42940111 is an apocalyptic number.

42940111 is a deficient number, since it is larger than the sum of its proper divisors (1).

42940111 is an equidigital number, since it uses as much as digits as its factorization.

42940111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 42940111 is about 6552.8704397386. The cubic root of 42940111 is about 350.1770831784.

The spelling of 42940111 in words is "forty-two million, nine hundred forty thousand, one hundred eleven".