4242845 has 12 divisors (see below), whose sum is σ = 5278260. Its totient is φ = 3273984.

The previous prime is 4242841. The next prime is 4242851. The reversal of 4242845 is 5482424.

It can be written as a sum of positive squares in 6 ways, for example, as 89401 + 4153444 = 299^2 + 2038^2 .

It is not a de Polignac number, because 4242845 - 2² = 4242841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a d-powerful number, because it can be written as 4 + 2¹⁵ + 4² + 2²² + 8² + 4³ + 5⁶ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3701 + ... + 4709.

It is an arithmetic number, because the mean of its divisors is an integer number (439855).

Almost surely, 2^4242845 is an apocalyptic number.

4242845 is the 1682-nd pentagonal number.

It is an amenable number.

4242845 is a deficient number, since it is larger than the sum of its proper divisors (1035415).

4242845 is a wasteful number, since it uses less digits than its factorization.

4242845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072 (or 1043 counting only the distinct ones).

The product of its digits is 10240, while the sum is 29.

The square root of 4242845 is about 2059.8167394213. The cubic root of 4242845 is about 161.8896393095.

The spelling of 4242845 in words is "four million, two hundred forty-two thousand, eight hundred forty-five".