4242125 has 8 divisors (see below), whose sum is σ = 5294328. Its totient is φ = 3393600.

The previous prime is 4242109. The next prime is 4242127. The reversal of 4242125 is 5212424.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 72361 + 4169764 = 269^2 + 2042^2 .

It is not a de Polignac number, because 4242125 - 2⁴ = 4242109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4242097 and 4242106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4242127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16844 + ... + 17093.

It is an arithmetic number, because the mean of its divisors is an integer number (661791).

Almost surely, 2^4242125 is an apocalyptic number.

It is an amenable number.

4242125 is a deficient number, since it is larger than the sum of its proper divisors (1052203).

4242125 is an equidigital number, since it uses as much as digits as its factorization.

4242125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33952 (or 33942 counting only the distinct ones).

The product of its digits is 640, while the sum is 20.

The square root of 4242125 is about 2059.6419591764. The cubic root of 4242125 is about 161.8804813715.

Adding to 4242125 its reverse (5212424), we get a palindrome (9454549).

Subtracting 4242125 from its reverse (5212424), we obtain a cube (970299 = 99³).

The spelling of 4242125 in words is "four million, two hundred forty-two thousand, one hundred twenty-five".