4125121 has 24 divisors (see below), whose sum is σ = 5586624. Its totient is φ = 2957760.

The previous prime is 4125113. The next prime is 4125127. The reversal of 4125121 is 1215214.

It is not a de Polignac number, because 4125121 - 2³ = 4125113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4125095 and 4125104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4125127) 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 23 ways as a sum of consecutive naturals, for example, 12855 + ... + 13171.

It is an arithmetic number, because the mean of its divisors is an integer number (232776).

Almost surely, 2^4125121 is an apocalyptic number.

It is an amenable number.

4125121 is a deficient number, since it is larger than the sum of its proper divisors (1461503).

4125121 is a wasteful number, since it uses less digits than its factorization.

4125121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361 (or 348 counting only the distinct ones).

The product of its digits is 80, while the sum is 16.

The square root of 4125121 is about 2031.0393890814. The cubic root of 4125121 is about 160.3782846124.

The spelling of 4125121 in words is "four million, one hundred twenty-five thousand, one hundred twenty-one".