42248249 has 2 divisors, whose sum is σ = 42248250. Its totient is φ = 42248248.

The previous prime is 42248233. The next prime is 42248293. The reversal of 42248249 is 94284224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41925625 + 322624 = 6475^2 + 568^2 .

It is a cyclic number.

It is not a de Polignac number, because 42248249 - 2⁴ = 42248233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42248299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21124124 + 21124125.

It is an arithmetic number, because the mean of its divisors is an integer number (21124125).

Almost surely, 2^42248249 is an apocalyptic number.

It is an amenable number.

42248249 is a deficient number, since it is larger than the sum of its proper divisors (1).

42248249 is an equidigital number, since it uses as much as digits as its factorization.

42248249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 35.

The square root of 42248249 is about 6499.8653062967. The cubic root of 42248249 is about 348.2861768285.

The spelling of 42248249 in words is "forty-two million, two hundred forty-eight thousand, two hundred forty-nine".