4209245 has 4 divisors (see below), whose sum is σ = 5051100. Its totient is φ = 3367392.

The previous prime is 4209229. The next prime is 4209259. The reversal of 4209245 is 5429024.

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 3104644 + 1104601 = 1762^2 + 1051^2 .

It is a cyclic number.

It is not a de Polignac number, because 4209245 - 2⁴ = 4209229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420920 + ... + 420929.

It is an arithmetic number, because the mean of its divisors is an integer number (1262775).

Almost surely, 2^4209245 is an apocalyptic number.

It is an amenable number.

4209245 is a deficient number, since it is larger than the sum of its proper divisors (841855).

4209245 is an equidigital number, since it uses as much as digits as its factorization.

4209245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841854.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 4209245 is about 2051.6444623765. The cubic root of 4209245 is about 161.4611599736.

The spelling of 4209245 in words is "four million, two hundred nine thousand, two hundred forty-five".