42735647 has 8 divisors (see below), whose sum is σ = 44960400. Its totient is φ = 40561024.

The previous prime is 42735619. The next prime is 42735673. The reversal of 42735647 is 74653724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42735647 - 2²⁴ = 25958431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42735647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42735607) 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 in 7 ways as a sum of consecutive naturals, for example, 10778 + ... + 14199.

It is an arithmetic number, because the mean of its divisors is an integer number (5620050).

Almost surely, 2^42735647 is an apocalyptic number.

42735647 is a deficient number, since it is larger than the sum of its proper divisors (2224753).

42735647 is a wasteful number, since it uses less digits than its factorization.

42735647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25065.

The product of its digits is 141120, while the sum is 38.

The square root of 42735647 is about 6537.2507218249. The cubic root of 42735647 is about 349.6203966014.

The spelling of 42735647 in words is "forty-two million, seven hundred thirty-five thousand, six hundred forty-seven".