4201405 has 16 divisors (see below), whose sum is σ = 5488560. Its totient is φ = 3068928.

The previous prime is 4201391. The next prime is 4201409. The reversal of 4201405 is 5041024.

It can be written as a sum of positive squares in 8 ways, for example, as 47961 + 4153444 = 219^2 + 2038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4201405 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4201409) 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 15 ways as a sum of consecutive naturals, for example, 6789 + ... + 7381.

It is an arithmetic number, because the mean of its divisors is an integer number (343035).

Almost surely, 2^4201405 is an apocalyptic number.

It is an amenable number.

4201405 is a deficient number, since it is larger than the sum of its proper divisors (1287155).

4201405 is a wasteful number, since it uses less digits than its factorization.

4201405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 4201405 is about 2049.7329094299. The cubic root of 4201405 is about 161.3608536066.

Adding to 4201405 its reverse (5041024), we get a palindrome (9242429).

The spelling of 4201405 in words is "four million, two hundred one thousand, four hundred five".