4121505 has 24 divisors (see below), whose sum is σ = 7255872. Its totient is φ = 2163744.

The previous prime is 4121503. The next prime is 4121527. The reversal of 4121505 is 5051214.

It is not a de Polignac number, because 4121505 - 2¹ = 4121503 is a prime.

4121505 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4121503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2332 + ... + 3698.

It is an arithmetic number, because the mean of its divisors is an integer number (302328).

Almost surely, 2^4121505 is an apocalyptic number.

4121505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4121505 is a deficient number, since it is larger than the sum of its proper divisors (3134367).

4121505 is a wasteful number, since it uses less digits than its factorization.

4121505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445 (or 1442 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 4121505 is about 2030.1490093094. The cubic root of 4121505 is about 160.3314094289.

Adding to 4121505 its reverse (5051214), we get a palindrome (9172719).

The spelling of 4121505 in words is "four million, one hundred twenty-one thousand, five hundred five".