42418273 has 2 divisors, whose sum is σ = 42418274. Its totient is φ = 42418272.

The previous prime is 42418267. The next prime is 42418289. The reversal of 42418273 is 37281424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33315984 + 9102289 = 5772^2 + 3017^2 .

It is a cyclic number.

It is not a de Polignac number, because 42418273 - 2²¹ = 40321121 is a prime.

It is not a weakly prime, because it can be changed into another prime (42418373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21209136 + 21209137.

It is an arithmetic number, because the mean of its divisors is an integer number (21209137).

Almost surely, 2^42418273 is an apocalyptic number.

It is an amenable number.

42418273 is a deficient number, since it is larger than the sum of its proper divisors (1).

42418273 is an equidigital number, since it uses as much as digits as its factorization.

42418273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 31.

The square root of 42418273 is about 6512.9312141309. The cubic root of 42418273 is about 348.7527661724.

Adding to 42418273 its reverse (37281424), we get a palindrome (79699697).

The spelling of 42418273 in words is "forty-two million, four hundred eighteen thousand, two hundred seventy-three".