42741947 has 2 divisors, whose sum is σ = 42741948. Its totient is φ = 42741946.

The previous prime is 42741943. The next prime is 42741949. The reversal of 42741947 is 74914724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42741947 - 2² = 42741943 is a prime.

Together with 42741949, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42741947.

It is not a weakly prime, because it can be changed into another prime (42741943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21370973 + 21370974.

It is an arithmetic number, because the mean of its divisors is an integer number (21370974).

Almost surely, 2^42741947 is an apocalyptic number.

42741947 is a deficient number, since it is larger than the sum of its proper divisors (1).

42741947 is an equidigital number, since it uses as much as digits as its factorization.

42741947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 38.

The square root of 42741947 is about 6537.7325580051. The cubic root of 42741947 is about 349.6375758606.

The spelling of 42741947 in words is "forty-two million, seven hundred forty-one thousand, nine hundred forty-seven".