41421666 has 64 divisors (see below), whose sum is σ = 101606400. Its totient is φ = 11077440.

The previous prime is 41421661. The next prime is 41421683. The reversal of 41421666 is 66612414.

It is not an unprimeable number, because it can be changed into a prime (41421661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18685 + ... + 20783.

It is an arithmetic number, because the mean of its divisors is an integer number (1587600).

Almost surely, 2^41421666 is an apocalyptic number.

41421666 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 41421666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50803200).

41421666 is an abundant number, since it is smaller than the sum of its proper divisors (60184734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

41421666 is a wasteful number, since it uses less digits than its factorization.

41421666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151.

The product of its digits is 6912, while the sum is 30.

The square root of 41421666 is about 6435.9665940712. The cubic root of 41421666 is about 345.9998050942. Note that the first 3 decimals are identical.

The spelling of 41421666 in words is "forty-one million, four hundred twenty-one thousand, six hundred sixty-six".