4121866401 has 4 divisors (see below), whose sum is σ = 5495821872. Its totient is φ = 2747910932.

The previous prime is 4121866387. The next prime is 4121866421. The reversal of 4121866401 is 1046681214.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4121866401 - 2¹⁷ = 4121735329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4121866421) 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 3 ways as a sum of consecutive naturals, for example, 686977731 + ... + 686977736.

It is an arithmetic number, because the mean of its divisors is an integer number (1373955468).

Almost surely, 2^4121866401 is an apocalyptic number.

It is an amenable number.

4121866401 is a deficient number, since it is larger than the sum of its proper divisors (1373955471).

4121866401 is a wasteful number, since it uses less digits than its factorization.

4121866401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373955470.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 4121866401 is about 64201.7632234505. The cubic root of 4121866401 is about 1603.3609560043.

The spelling of 4121866401 in words is "four billion, one hundred twenty-one million, eight hundred sixty-six thousand, four hundred one".