42054041 has 4 divisors (see below), whose sum is σ = 42084900. Its totient is φ = 42023184.

The previous prime is 42054037. The next prime is 42054109. The reversal of 42054041 is 14045024.

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 20894041 + 21160000 = 4571^2 + 4600^2 .

It is a cyclic number.

It is not a de Polignac number, because 42054041 - 2² = 42054037 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42054541) 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, 13286 + ... + 16143.

It is an arithmetic number, because the mean of its divisors is an integer number (10521225).

Almost surely, 2^42054041 is an apocalyptic number.

It is an amenable number.

42054041 is a deficient number, since it is larger than the sum of its proper divisors (30859).

42054041 is a wasteful number, since it uses less digits than its factorization.

42054041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30858.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 42054041 is about 6484.9087117707. The cubic root of 42054041 is about 347.7516862712.

Adding to 42054041 its reverse (14045024), we get a palindrome (56099065).

The spelling of 42054041 in words is "forty-two million, fifty-four thousand, forty-one".