42881441 has 4 divisors (see below), whose sum is σ = 43468932. Its totient is φ = 42293952.

The previous prime is 42881413. The next prime is 42881467. The reversal of 42881441 is 14418824.

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 35153041 + 7728400 = 5929^2 + 2780^2 .

It is a cyclic number.

It is not a de Polignac number, because 42881441 - 2²² = 38687137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42881398 and 42881407.

It is not an unprimeable number, because it can be changed into a prime (42881471) 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, 293636 + ... + 293781.

It is an arithmetic number, because the mean of its divisors is an integer number (10867233).

Almost surely, 2^42881441 is an apocalyptic number.

It is an amenable number.

42881441 is a deficient number, since it is larger than the sum of its proper divisors (587491).

42881441 is an equidigital number, since it uses as much as digits as its factorization.

42881441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587490.

The product of its digits is 8192, while the sum is 32.

The square root of 42881441 is about 6548.3922454294. The cubic root of 42881441 is about 350.0175256530.

The spelling of 42881441 in words is "forty-two million, eight hundred eighty-one thousand, four hundred forty-one".