4238125209 has 12 divisors (see below), whose sum is σ = 6122309076. Its totient is φ = 2825152512.

The previous prime is 4238125181. The next prime is 4238125223. The reversal of 4238125209 is 9025218324.

It is a happy number.

4238125209 is a `hidden beast` number, since 423 + 8 + 1 + 25 + 209 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 732893184 + 3505232025 = 27072^2 + 59205^2 .

It is not a de Polignac number, because 4238125209 - 2¹⁶ = 4238059673 is a prime.

It is a super-2 number, since 2×4238125209² = 35923410574322587362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4238125259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151417 + ... + 177209.

It is an arithmetic number, because the mean of its divisors is an integer number (510192423).

Almost surely, 2^4238125209 is an apocalyptic number.

It is an amenable number.

4238125209 is a deficient number, since it is larger than the sum of its proper divisors (1884183867).

4238125209 is a wasteful number, since it uses less digits than its factorization.

4238125209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44056 (or 44053 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 4238125209 is about 65100.8848557376. The cubic root of 4238125209 is about 1618.2958771962.

The spelling of 4238125209 in words is "four billion, two hundred thirty-eight million, one hundred twenty-five thousand, two hundred nine".