41072721 has 8 divisors (see below), whose sum is σ = 55797120. Its totient is φ = 26865072.

The previous prime is 41072711. The next prime is 41072723. The reversal of 41072721 is 12727014.

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

It is not a de Polignac number, because 41072721 - 2⁷ = 41072593 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 41072691 and 41072700.

It is not an unprimeable number, because it can be changed into a prime (41072723) 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, 129001 + ... + 129318.

It is an arithmetic number, because the mean of its divisors is an integer number (6974640).

Almost surely, 2^41072721 is an apocalyptic number.

It is an amenable number.

41072721 is a deficient number, since it is larger than the sum of its proper divisors (14724399).

41072721 is a wasteful number, since it uses less digits than its factorization.

41072721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258375.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 41072721 is about 6408.8002777431. The cubic root of 41072721 is about 345.0254717593.

Adding to 41072721 its reverse (12727014), we get a palindrome (53799735).

The spelling of 41072721 in words is "forty-one million, seventy-two thousand, seven hundred twenty-one".