42541805 has 8 divisors (see below), whose sum is σ = 52295544. Its totient is φ = 33203200.

The previous prime is 42541801. The next prime is 42541841. The reversal of 42541805 is 50814524.

It can be written as a sum of positive squares in 4 ways, for example, as 174724 + 42367081 = 418^2 + 6509^2 .

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

It is not a de Polignac number, because 42541805 - 2² = 42541801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42541801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103556 + ... + 103965.

It is an arithmetic number, because the mean of its divisors is an integer number (6536943).

Almost surely, 2^42541805 is an apocalyptic number.

It is an amenable number.

42541805 is a deficient number, since it is larger than the sum of its proper divisors (9753739).

42541805 is a wasteful number, since it uses less digits than its factorization.

42541805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207567.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 42541805 is about 6522.4079142599. The cubic root of 42541805 is about 349.0909881181.

The spelling of 42541805 in words is "forty-two million, five hundred forty-one thousand, eight hundred five".