42271247 has 2 divisors, whose sum is σ = 42271248. Its totient is φ = 42271246.

The previous prime is 42271237. The next prime is 42271277. The reversal of 42271247 is 74217224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42271247 - 2¹⁰ = 42270223 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 (42271237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21135623 + 21135624.

It is an arithmetic number, because the mean of its divisors is an integer number (21135624).

Almost surely, 2^42271247 is an apocalyptic number.

42271247 is a deficient number, since it is larger than the sum of its proper divisors (1).

42271247 is an equidigital number, since it uses as much as digits as its factorization.

42271247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6272, while the sum is 29.

The square root of 42271247 is about 6501.6341791891. The cubic root of 42271247 is about 348.3493623468.

The spelling of 42271247 in words is "forty-two million, two hundred seventy-one thousand, two hundred forty-seven".