42216113 has 2 divisors, whose sum is σ = 42216114. Its totient is φ = 42216112.

The previous prime is 42216061. The next prime is 42216131. The reversal of 42216113 is 31161224.

Together with next prime (42216131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40233649 + 1982464 = 6343^2 + 1408^2 .

It is a cyclic number.

It is not a de Polignac number, because 42216113 - 2¹² = 42212017 is a prime.

It is not a weakly prime, because it can be changed into another prime (42216133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21108056 + 21108057.

It is an arithmetic number, because the mean of its divisors is an integer number (21108057).

Almost surely, 2^42216113 is an apocalyptic number.

It is an amenable number.

42216113 is a deficient number, since it is larger than the sum of its proper divisors (1).

42216113 is an equidigital number, since it uses as much as digits as its factorization.

42216113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 42216113 is about 6497.3927848022. The cubic root of 42216113 is about 348.1978468275.

Adding to 42216113 its reverse (31161224), we get a palindrome (73377337).

The spelling of 42216113 in words is "forty-two million, two hundred sixteen thousand, one hundred thirteen".