41421421 has 4 divisors (see below), whose sum is σ = 41460412. Its totient is φ = 41382432.

The previous prime is 41421409. The next prime is 41421433. The reversal of 41421421 is 12412414.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (41421409) and next prime (41421433).

It can be written as a sum of positive squares in 2 ways, for example, as 20160100 + 21261321 = 4490^2 + 4611^2 .

It is a cyclic number.

It is not a de Polignac number, because 41421421 - 2⁹ = 41420909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41421451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17856 + ... + 20041.

It is an arithmetic number, because the mean of its divisors is an integer number (10365103).

Almost surely, 2^41421421 is an apocalyptic number.

It is an amenable number.

41421421 is a deficient number, since it is larger than the sum of its proper divisors (38991).

41421421 is a wasteful number, since it uses less digits than its factorization.

41421421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38990.

The product of its digits is 256, while the sum is 19.

The square root of 41421421 is about 6435.9475603830. The cubic root of 41421421 is about 345.9991229220. Note that the first 3 decimals are identical.

Adding to 41421421 its reverse (12412414), we get a palindrome (53833835).

The spelling of 41421421 in words is "forty-one million, four hundred twenty-one thousand, four hundred twenty-one".