42485147 has 2 divisors, whose sum is σ = 42485148. Its totient is φ = 42485146.

The previous prime is 42485141. The next prime is 42485189. The reversal of 42485147 is 74158424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42485147 - 2⁸ = 42484891 is a prime.

It is a super-2 number, since 2×42485147² = 3609975431223218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42485141) 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, 21242573 + 21242574.

It is an arithmetic number, because the mean of its divisors is an integer number (21242574).

Almost surely, 2^42485147 is an apocalyptic number.

42485147 is a deficient number, since it is larger than the sum of its proper divisors (1).

42485147 is an equidigital number, since it uses as much as digits as its factorization.

42485147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35840, while the sum is 35.

The square root of 42485147 is about 6518.0631325571. The cubic root of 42485147 is about 348.9359438872.

The spelling of 42485147 in words is "forty-two million, four hundred eighty-five thousand, one hundred forty-seven".