42245111 has 2 divisors, whose sum is σ = 42245112. Its totient is φ = 42245110.

The previous prime is 42245107. The next prime is 42245117. The reversal of 42245111 is 11154224.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42245111 - 2² = 42245107 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42245117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21122555 + 21122556.

It is an arithmetic number, because the mean of its divisors is an integer number (21122556).

Almost surely, 2^42245111 is an apocalyptic number.

42245111 is a deficient number, since it is larger than the sum of its proper divisors (1).

42245111 is an equidigital number, since it uses as much as digits as its factorization.

42245111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320, while the sum is 20.

The square root of 42245111 is about 6499.6239121968. The cubic root of 42245111 is about 348.2775535987.

Adding to 42245111 its reverse (11154224), we get a palindrome (53399335).

The spelling of 42245111 in words is "forty-two million, two hundred forty-five thousand, one hundred eleven".