4205845 has 8 divisors (see below), whose sum is σ = 5768064. Its totient is φ = 2883984.

The previous prime is 4205837. The next prime is 4205857. The reversal of 4205845 is 5485024.

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

It is a cyclic number.

It is not a de Polignac number, because 4205845 - 2³ = 4205837 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, 60049 + ... + 60118.

It is an arithmetic number, because the mean of its divisors is an integer number (721008).

Almost surely, 2^4205845 is an apocalyptic number.

It is an amenable number.

4205845 is a deficient number, since it is larger than the sum of its proper divisors (1562219).

4205845 is a wasteful number, since it uses less digits than its factorization.

4205845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120179.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 4205845 is about 2050.8156913775. The cubic root of 4205845 is about 161.4176750716.

It can be divided in two parts, 4205 and 845, that multiplied together give a square (3553225 = 1885²).

The spelling of 4205845 in words is "four million, two hundred five thousand, eight hundred forty-five".