3925121 has 4 divisors (see below), whose sum is σ = 4060500. Its totient is φ = 3789744.

The previous prime is 3925109. The next prime is 3925123. The reversal of 3925121 is 1215293.

3925121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1488400 + 2436721 = 1220^2 + 1561^2 .

It is a cyclic number.

It is not a de Polignac number, because 3925121 - 2¹⁰ = 3924097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3925123) 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 3 ways as a sum of consecutive naturals, for example, 67646 + ... + 67703.

It is an arithmetic number, because the mean of its divisors is an integer number (1015125).

Almost surely, 2^3925121 is an apocalyptic number.

It is an amenable number.

3925121 is a deficient number, since it is larger than the sum of its proper divisors (135379).

3925121 is a wasteful number, since it uses less digits than its factorization.

3925121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135378.

The product of its digits is 540, while the sum is 23.

The square root of 3925121 is about 1981.1918130257. The cubic root of 3925121 is about 157.7433342823.

The spelling of 3925121 in words is "three million, nine hundred twenty-five thousand, one hundred twenty-one".