42455111 has 2 divisors, whose sum is σ = 42455112. Its totient is φ = 42455110.

The previous prime is 42455107. The next prime is 42455113. The reversal of 42455111 is 11155424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42455111 - 2² = 42455107 is a prime.

Together with 42455113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42455113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21227555 + 21227556.

It is an arithmetic number, because the mean of its divisors is an integer number (21227556).

Almost surely, 2^42455111 is an apocalyptic number.

42455111 is a deficient number, since it is larger than the sum of its proper divisors (1).

42455111 is an equidigital number, since it uses as much as digits as its factorization.

42455111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 800, while the sum is 23.

The square root of 42455111 is about 6515.7586664946. The cubic root of 42455111 is about 348.8536946654.

The spelling of 42455111 in words is "forty-two million, four hundred fifty-five thousand, one hundred eleven".