42685243447 has 54 divisors (see below), whose sum is σ = 55649650392. Its totient is φ = 32047725600.

The previous prime is 42685243411. The next prime is 42685243451. The reversal of 42685243447 is 74434258624.

It is not a de Polignac number, because 42685243447 - 2¹¹ = 42685241399 is a prime.

It is a super-3 number, since 3×42685243447³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42685243447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42685243847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 186398329 + ... + 186398557.

Almost surely, 2^42685243447 is an apocalyptic number.

42685243447 is a deficient number, since it is larger than the sum of its proper divisors (12964406945).

42685243447 is an equidigital number, since it uses as much as digits as its factorization.

42685243447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 278 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 49.

The spelling of 42685243447 in words is "forty-two billion, six hundred eighty-five million, two hundred forty-three thousand, four hundred forty-seven".