42718237 has 2 divisors, whose sum is σ = 42718238. Its totient is φ = 42718236.

The previous prime is 42718157. The next prime is 42718243. The reversal of 42718237 is 73281724.

42718237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36832761 + 5885476 = 6069^2 + 2426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42718237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42718037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21359118 + 21359119.

It is an arithmetic number, because the mean of its divisors is an integer number (21359119).

Almost surely, 2^42718237 is an apocalyptic number.

It is an amenable number.

42718237 is a deficient number, since it is larger than the sum of its proper divisors (1).

42718237 is an equidigital number, since it uses as much as digits as its factorization.

42718237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18816, while the sum is 34.

The square root of 42718237 is about 6535.9189866460. The cubic root of 42718237 is about 349.5729130735.

The spelling of 42718237 in words is "forty-two million, seven hundred eighteen thousand, two hundred thirty-seven".