41721145 has 8 divisors (see below), whose sum is σ = 53010504. Its totient is φ = 31413504.

The previous prime is 41721107. The next prime is 41721157. The reversal of 41721145 is 54112714.

It can be written as a sum of positive squares in 4 ways, for example, as 1411344 + 40309801 = 1188^2 + 6349^2 .

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 41721145 - 2⁹ = 41720633 is a prime.

It is a super-2 number, since 2×41721145² = 3481307880222050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245334 + ... + 245503.

It is an arithmetic number, because the mean of its divisors is an integer number (6626313).

Almost surely, 2^41721145 is an apocalyptic number.

It is an amenable number.

41721145 is a deficient number, since it is larger than the sum of its proper divisors (11289359).

41721145 is a wasteful number, since it uses less digits than its factorization.

41721145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490859.

The product of its digits is 1120, while the sum is 25.

The square root of 41721145 is about 6459.1907387845. The cubic root of 41721145 is about 346.8316640394.

Adding to 41721145 its reverse (54112714), we get a palindrome (95833859).

The spelling of 41721145 in words is "forty-one million, seven hundred twenty-one thousand, one hundred forty-five".