4242909 has 32 divisors (see below), whose sum is σ = 6658560. Its totient is φ = 2376000.

The previous prime is 4242907. The next prime is 4242913. The reversal of 4242909 is 9092424.

It is not a de Polignac number, because 4242909 - 2¹ = 4242907 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41959 + ... + 42059.

It is an arithmetic number, because the mean of its divisors is an integer number (208080).

Almost surely, 2^4242909 is an apocalyptic number.

It is an amenable number.

4242909 is a deficient number, since it is larger than the sum of its proper divisors (2415651).

4242909 is a wasteful number, since it uses less digits than its factorization.

4242909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 4242909 is about 2059.8322747253. The cubic root of 4242909 is about 161.8904532983.

It can be divided in two parts, 4242 and 909, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 4242909 in words is "four million, two hundred forty-two thousand, nine hundred nine".