4121305 has 8 divisors (see below), whose sum is σ = 4995144. Its totient is φ = 3264000.

The previous prime is 4121297. The next prime is 4121311. The reversal of 4121305 is 5031214.

It can be written as a sum of positive squares in 4 ways, for example, as 1121481 + 2999824 = 1059^2 + 1732^2 .

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

It is not a de Polignac number, because 4121305 - 2³ = 4121297 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3576 + ... + 4585.

It is an arithmetic number, because the mean of its divisors is an integer number (624393).

It is the magic constant of a 202 × 202 magic square.

Almost surely, 2^4121305 is an apocalyptic number.

It is an amenable number.

4121305 is a deficient number, since it is larger than the sum of its proper divisors (873839).

4121305 is a wasteful number, since it uses less digits than its factorization.

4121305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8267.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 4121305 is about 2030.0997512438. The cubic root of 4121305 is about 160.3288159749.

Adding to 4121305 its reverse (5031214), we get a palindrome (9152519).

Subtracting 4121305 from its reverse (5031214), we obtain a palindrome (909909).

It can be divided in two parts, 4121 and 305, that multiplied together give a triangular number (1256905 = T₁₅₈₅).

The spelling of 4121305 in words is "four million, one hundred twenty-one thousand, three hundred five".