42710645 has 4 divisors (see below), whose sum is σ = 51252780. Its totient is φ = 34168512.

The previous prime is 42710641. The next prime is 42710663. The reversal of 42710645 is 54601724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8814961 + 33895684 = 2969^2 + 5822^2 .

It is a cyclic number.

It is not a de Polignac number, because 42710645 - 2² = 42710641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42710641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4271060 + ... + 4271069.

It is an arithmetic number, because the mean of its divisors is an integer number (12813195).

Almost surely, 2^42710645 is an apocalyptic number.

It is an amenable number.

42710645 is a deficient number, since it is larger than the sum of its proper divisors (8542135).

42710645 is an equidigital number, since it uses as much as digits as its factorization.

42710645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8542134.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 42710645 is about 6535.3381702862. The cubic root of 42710645 is about 349.5522028337.

The spelling of 42710645 in words is "forty-two million, seven hundred ten thousand, six hundred forty-five".