42418291 has 2 divisors, whose sum is σ = 42418292. Its totient is φ = 42418290.

The previous prime is 42418289. The next prime is 42418301. The reversal of 42418291 is 19281424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42418291 - 2¹ = 42418289 is a prime.

It is a super-2 number, since 2×42418291² = 3598622822721362, which contains 22 as substring.

Together with 42418289, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42418091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21209145 + 21209146.

It is an arithmetic number, because the mean of its divisors is an integer number (21209146).

Almost surely, 2^42418291 is an apocalyptic number.

42418291 is a deficient number, since it is larger than the sum of its proper divisors (1).

42418291 is an equidigital number, since it uses as much as digits as its factorization.

42418291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 31.

The square root of 42418291 is about 6512.9325959970. The cubic root of 42418291 is about 348.7528155029.

The spelling of 42418291 in words is "forty-two million, four hundred eighteen thousand, two hundred ninety-one".