41581421 has 8 divisors (see below), whose sum is σ = 48681024. Its totient is φ = 34771680.

The previous prime is 41581411. The next prime is 41581453. The reversal of 41581421 is 12418514.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41581421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41581411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72155 + ... + 72728.

It is an arithmetic number, because the mean of its divisors is an integer number (6085128).

Almost surely, 2^41581421 is an apocalyptic number.

41581421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

41581421 is a deficient number, since it is larger than the sum of its proper divisors (7099603).

41581421 is a wasteful number, since it uses less digits than its factorization.

41581421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144931.

The product of its digits is 1280, while the sum is 26.

The square root of 41581421 is about 6448.3657619586. The cubic root of 41581421 is about 346.4440515824. Note that the first 3 decimals are identical.

Adding to 41581421 its reverse (12418514), we get a palindrome (53999935).

The spelling of 41581421 in words is "forty-one million, five hundred eighty-one thousand, four hundred twenty-one".