4121605 has 8 divisors (see below), whose sum is σ = 5105664. Its totient is φ = 3190800.

The previous prime is 4121603. The next prime is 4121609. The reversal of 4121605 is 5061214.

4121605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4121605 - 2¹ = 4121603 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 (4121603) 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 7 ways as a sum of consecutive naturals, for example, 13141 + ... + 13450.

It is an arithmetic number, because the mean of its divisors is an integer number (638208).

Almost surely, 2^4121605 is an apocalyptic number.

It is an amenable number.

4121605 is a deficient number, since it is larger than the sum of its proper divisors (984059).

4121605 is a wasteful number, since it uses less digits than its factorization.

4121605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26627.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 4121605 is about 2030.1736378941. The cubic root of 4121605 is about 160.3327061244.

Adding to 4121605 its reverse (5061214), we get a palindrome (9182819).

The spelling of 4121605 in words is "four million, one hundred twenty-one thousand, six hundred five".