40105641 has 8 divisors (see below), whose sum is σ = 53511264. Its totient is φ = 26718560.

The previous prime is 40105631. The next prime is 40105643. The reversal of 40105641 is 14650104.

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

It is a cyclic number.

It is not a de Polignac number, because 40105641 - 2¹¹ = 40103593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40105643) 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, 1621 + ... + 9101.

It is an arithmetic number, because the mean of its divisors is an integer number (6688908).

Almost surely, 2^40105641 is an apocalyptic number.

It is an amenable number.

40105641 is a deficient number, since it is larger than the sum of its proper divisors (13405623).

40105641 is a wasteful number, since it uses less digits than its factorization.

40105641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9271.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 40105641 is about 6332.9014677318. The cubic root of 40105641 is about 342.2959972917.

Adding to 40105641 its reverse (14650104), we get a palindrome (54755745).

The spelling of 40105641 in words is "forty million, one hundred five thousand, six hundred forty-one".