42182947 has 2 divisors, whose sum is σ = 42182948. Its totient is φ = 42182946.

The previous prime is 42182927. The next prime is 42182951. The reversal of 42182947 is 74928124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42182947 is a prime.

It is a Chen prime.

It is a nialpdrome in base 9.

It is not a weakly prime, because it can be changed into another prime (42182927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21091473 + 21091474.

It is an arithmetic number, because the mean of its divisors is an integer number (21091474).

Almost surely, 2^42182947 is an apocalyptic number.

42182947 is a deficient number, since it is larger than the sum of its proper divisors (1).

42182947 is an equidigital number, since it uses as much as digits as its factorization.

42182947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The square root of 42182947 is about 6494.8400288229. The cubic root of 42182947 is about 348.1066387199.

The spelling of 42182947 in words is "forty-two million, one hundred eighty-two thousand, nine hundred forty-seven".