4201345 has 4 divisors (see below), whose sum is σ = 5041620. Its totient is φ = 3361072.

The previous prime is 4201343. The next prime is 4201357. The reversal of 4201345 is 5431024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1218816 + 2982529 = 1104^2 + 1727^2 .

It is a cyclic number.

It is not a de Polignac number, because 4201345 - 2¹ = 4201343 is a prime.

4201345 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4201343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420130 + ... + 420139.

It is an arithmetic number, because the mean of its divisors is an integer number (1260405).

Almost surely, 2^4201345 is an apocalyptic number.

It is an amenable number.

4201345 is a deficient number, since it is larger than the sum of its proper divisors (840275).

4201345 is an equidigital number, since it uses as much as digits as its factorization.

4201345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840274.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 4201345 is about 2049.7182733244. The cubic root of 4201345 is about 161.3600854749.

Adding to 4201345 its reverse (5431024), we get a palindrome (9632369).

The spelling of 4201345 in words is "four million, two hundred one thousand, three hundred forty-five".