42280841 has 4 divisors (see below), whose sum is σ = 42299412. Its totient is φ = 42262272.

The previous prime is 42280817. The next prime is 42280873. The reversal of 42280841 is 14808224.

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 31125241 + 11155600 = 5579^2 + 3340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42280841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42280891) 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 3 ways as a sum of consecutive naturals, for example, 5300 + ... + 10613.

It is an arithmetic number, because the mean of its divisors is an integer number (10574853).

Almost surely, 2^42280841 is an apocalyptic number.

It is an amenable number.

42280841 is a deficient number, since it is larger than the sum of its proper divisors (18571).

42280841 is a wasteful number, since it uses less digits than its factorization.

42280841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18570.

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 42280841 is about 6502.3719518342. The cubic root of 42280841 is about 348.3757144672.

The spelling of 42280841 in words is "forty-two million, two hundred eighty thousand, eight hundred forty-one".