42971347 has 2 divisors, whose sum is σ = 42971348. Its totient is φ = 42971346.

The previous prime is 42971333. The next prime is 42971381. The reversal of 42971347 is 74317924.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42971347 - 2¹¹ = 42969299 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42971317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21485673 + 21485674.

It is an arithmetic number, because the mean of its divisors is an integer number (21485674).

Almost surely, 2^42971347 is an apocalyptic number.

42971347 is a deficient number, since it is larger than the sum of its proper divisors (1).

42971347 is an equidigital number, since it uses as much as digits as its factorization.

42971347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 42971347 is about 6555.2533894580. The cubic root of 42971347 is about 350.2619725739.

The spelling of 42971347 in words is "forty-two million, nine hundred seventy-one thousand, three hundred forty-seven".