42270287 has 2 divisors, whose sum is σ = 42270288. Its totient is φ = 42270286.

The previous prime is 42270271. The next prime is 42270311. The reversal of 42270287 is 78207224.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42270287 - 2⁴ = 42270271 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42270227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21135143 + 21135144.

It is an arithmetic number, because the mean of its divisors is an integer number (21135144).

Almost surely, 2^42270287 is an apocalyptic number.

42270287 is a deficient number, since it is larger than the sum of its proper divisors (1).

42270287 is an equidigital number, since it uses as much as digits as its factorization.

42270287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 42270287 is about 6501.5603511772. The cubic root of 42270287 is about 348.3467252673.

The spelling of 42270287 in words is "forty-two million, two hundred seventy thousand, two hundred eighty-seven".