41656121 has 12 divisors (see below), whose sum is σ = 45954468. Its totient is φ = 37535904.

The previous prime is 41656067. The next prime is 41656129. The reversal of 41656121 is 12165614.

It can be written as a sum of positive squares in 2 ways, for example, as 11833600 + 29822521 = 3440^2 + 5461^2 .

It is not a de Polignac number, because 41656121 - 2²² = 37461817 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41656129) 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 11 ways as a sum of consecutive naturals, for example, 23171 + ... + 24903.

It is an arithmetic number, because the mean of its divisors is an integer number (3829539).

Almost surely, 2^41656121 is an apocalyptic number.

It is an amenable number.

41656121 is a deficient number, since it is larger than the sum of its proper divisors (4298347).

41656121 is a wasteful number, since it uses less digits than its factorization.

41656121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832 (or 1789 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 41656121 is about 6454.1553281588. The cubic root of 41656121 is about 346.6513868800.

The spelling of 41656121 in words is "forty-one million, six hundred fifty-six thousand, one hundred twenty-one".